<Li> ^ Jump up to: Jon Seda left Chicago P.D. during its fourth season for Chicago Justice and returned to the former for its fifth season after the latter's cancellation . </Li> <P> The following table displays all the crossover storylines involving the Chicago series . </P> <Table> <Tr> <Th_colspan="3"> Crossover Between </Th> <Th> Episode Title </Th> <Th> Actors Appearing Outside Their Series </Th> <Th> Date Broadcast </Th> <Th> Description </Th> <Th> Type </Th> </Tr> <Tr> <Th> Series A </Th> <Th> Series B </Th> <Th> Series C </Th> </Tr> <Tr> <Td> Chicago Fire </Td> <Td> Chicago P.D. </Td> <Td> N / A </Td> <Td> "Let Her Go" (Chicago Fire S01E23) </Td> <Td> Appearing in Series A: Jason Beghe, Jon Seda, LaRoyce Hawkins </Td> <Td> May 15, 2013 </Td> <Td> Events force Lieutenant Casey to team up with the Intelligence Unit, now run by Voight, who doesn't appear to have changed his crooked ways after his stint in prison . </Td> <Td> Backdoor Pilot </Td> </Tr> <Tr> <Td> Law & Order: SVU </Td> <Td> Chicago P.D. </Td> <Td> N / A </Td> <Td> "Comic Perversion" (Law & Order: SVU S15E15) "Conventions" (Chicago PD S01E06) </Td> <Td> Appearing in Series A: Sophia Bush Appearing in Series B: Ice T, Kelli Giddish, David Eigenberg </Td> <Td> February 26, 2014 </Td> <Td> Chicago detective Erin Lindsay asks the NYPD for help in solving a series of rapes and murders, so Tutuola and Rollins head to Chicago to help Voight and Antonio catch the culprit . </Td> <Td> Two - Part Crossover </Td> </Tr> <Tr> <Td> Chicago Fire </Td> <Td> Chicago P.D. </Td> <Td> N / A </Td> <Td> "A Dark Day" (Chicago Fire S02E20) "8: 30 PM" (Chicago PD S01E12) </Td> <Td> Appearing in Series A: Jason Beghe, Jon Seda, Sophia Bush, Jesse Lee Soffer, Marina Squerciati, LaRoyce Hawkins Appearing in Series B: Jesse Spencer, Taylor Kinney, Eamonn Walker, Lauren German, Charlie Barnett, Joe Minoso </Td> <Td> April 29, 2014 April 30, 2014 </Td> <Td> A major explosion takes place at Chicago Med where Casey and Dawson are volunteering at a charity run, so Firehouse 51 and Intelligence work together to track down the culprits . </Td> <Td> Two - Part Crossover </Td> </Tr> <Tr> <Td> Chicago Fire </Td> <Td> Law & Order: SVU </Td> <Td> Chicago P.D. </Td> <Td> "Nobody Touches Anything" (Chicago Fire S03E07) "Chicago Crossover" (Law & Order: SVU S16E07) "They'll Have to Go Through Me" (Chicago PD S02E07) </Td> <Td> Appearing in Series A: Jason Beghe, Sophia Bush, Kelli Giddish Appearing in Series B: Jason Beghe, Sophia Bush, Jesse Lee Soffer Appearing in Series C: Danny Pino, Kelli Giddish, Mariska Hargitay </Td> <Td> November 11, 2014 November 12, 2014 </Td> <Td> When Firehouse 51 rescues the owner of a house on fire, they find him clutching a suspicious box, so the Chicago Intelligence Unit is brought in for further investigation, leading them to work with Special Victims Unit to take down a child pornography ring . </Td> <Td> Three - Part Crossover </Td> </Tr> <Tr> <Td> Chicago Fire </Td> <Td> Chicago P.D. </Td> <Td> N / A </Td> <Td> "Three Bells" (Chicago Fire S03E13) "A Little Devil Complex" (Chicago P.D. S02E13) </Td> <Td> Appearing in Series A: Marina Squerciati, Brian Geraghty, Jon Seda Appearing in Series B: Monica Raymund, Charlie Barnett, Eamonn Walker </Td> <Td> February 3, 2015 February 4, 2015 </Td> <Td> When more clues about Shay's death are found, Firehouse 51 works with Intelligence to apprehend the arsonist suspected of killing her . </Td> <Td> Two - Part Crossover </Td> </Tr> <Tr> <Td> Chicago Fire </Td> <Td> Chicago Med </Td> <Td> N / A </Td> <Td> "I Am The Apocalypse" (Chicago Fire S03E19) </Td> <Td> Appearing in Series A: Nick Gehlfuss, Yaya DaCosta, Oliver Platt, S. Epatha Merkerson, Jon Seda, Jesse Lee Soffer, Patrick Flueger </Td> <Td> April 7, 2015 </Td> <Td> The team transports victims of a chemical leak to Chicago Med, where the bad situation turns even worse due to a grenade - carrying madman who claims to have a deadly airborne disease . After the explosion everybody starts to panic and begin to flee with the doctors telling everyone to stay put and puts Chicago Med on lock down </Td> <Td> Backdoor Pilot </Td> </Tr> <Tr> <Td> Chicago Fire </Td> <Td> Chicago P.D. </Td> <Td> Law & Order: SVU </Td> <Td> "We Called Her Jellybean" (Chicago Fire S03E21) "The Number of Rats" (Chicago PD S02E20) "Daydream Believer" (Law & Order: SVU S16E20) </Td> <Td> Appearing in Series A: Mariska Hargitay, Jason Beghe, Jon Seda, Tamara Tunie Appearing in Series B: Mariska Hargitay, Danny Pino, Ice - T, Peter Scanavino, Jesse Spencer, Eamonn Walker Appearing in Series C: Jason Beghe, Sophia Bush, Jesse Lee Soffer, Marina Squerciati, Brian Geraghty, Stella Maeve </Td> <Td> April 28, 2015 April 29, 2015 </Td> <Td> An apartment fire connected to a case of attempted rape and murder in Chicago resembles an unsolved case in New York, so Special Victims Unit and Intelligence work together to find the suspect . </Td> <Td> Three - Part Crossover </Td> </Tr> <Tr> <Td> Chicago Fire </Td> <Td> Chicago Med </Td> <Td> Chicago P.D. </Td> <Td> "The Beating Heart" (Chicago Fire S04E10) "Malignant" (Chicago Med S01E05) "Now I'm God" (Chicago P.D. S03E10) </Td> <Td> Appearing in Series A: Brian Tee, Nick Gehlfuss, Amy Morton, Patrick Flueger, Marina Squerciati, Colin Donnell, Yaya DaCosta Appearing in Series B: Taylor Kinney, Monica Raymund, Kara Killmer, Dora Madison, David Eigenberg, Joe Minoso, Christian Stolte, Jesse Lee Soffer, Sophia Bush Appearing in Series C: Torrey DeVitto, Oliver Platt </Td> <Td> January 5, 2016 January 6, 2016 </Td> <Td> Christopher Herrmann is treated for stab wounds at Chicago Med, while a comatose woman rescued from a fire is discovered to be one of four patients given unnecessary chemotherapy by a doctor who may have killed Voight's wife . </Td> <Td> Three - Part Crossover </Td> </Tr> <Tr> <Td> Law & Order: SVU </Td> <Td> Chicago P.D. </Td> <Td> N / A </Td> <Td> "Nationwide Manhunt" (Law & Order: SVU S17E14) "The Song of Gregory William Yates" (Chicago PD S03E14) </Td> <Td> Appearing in Series A: Jason Beghe, Sophia Bush, Jon Seda Appearing in Series B: Mariska Hargitay, Ice - T, Eamonn Walker, Brian Tee </Td> <Td> February 10, 2016 </Td> <Td> Chicago detectives Lindsay and Dawson come to New York to assist in the hunt for two escaped murderers, one of whom is Greg Yates, who returns to Chicago and commits a triple homicide, so SVU detectives Benson and Tutuola come to Chicago to join in the investigation . </Td> <Td> Two - Part Crossover </Td> </Tr> <Tr> <Td> Chicago P.D. </Td> <Td> Chicago Justice </Td> <Td> N / A </Td> <Td> "Justice" (Chicago PD S03E21) </Td> <Td> Appearing in Series A: Philip Winchester, Joelle Carter, Carl Weathers, Taylor Kinney, Joe Minoso, Steven R. McQueen, Kara Killmer, Colin Donnell, Brian Tee, Marlyne Barrett </Td> <Td> May 11, 2016 </Td> <Td> Assistant States Attorney Peter Stone has been assigned to help defend Burgess and conduct his own investigation of her shooting of an unarmed African American teenager who is accused of shooting her partner . </Td> <Td> Backdoor Pilot </Td> </Tr> <Tr> <Td> Chicago Fire </Td> <Td> Chicago P.D. </Td> <Td> N / A </Td> <Td> "Some Make It, Some Don't" (Chicago Fire S05E09) "Don't Bury This Case" (Chicago P.D. S04E09) </Td> <Td> Appearing in Series A: Jason Beghe, Sophia Bush, Amy Morton, Marlyne Barrett Appearing in Series B: Taylor Kinney, Jesse Spencer, Christian Stolte </Td> <Td> January 3, 2017 </Td> <Td> Severide finds himself slipping back into old habits as he continues to help Anna with a bone marrow procedure . He's brought into the District when his car is found to have caused a deadly crash and during the investigation, the Chicago police track down a group of carjackers who may be the key to proving Severide's innocence . </Td> <Td> Two - Part Crossover </Td> </Tr> <Tr> <Td> Chicago Fire </Td> <Td> Chicago P.D. </Td> <Td> Chicago Justice </Td> <Td> "Deathtrap" (Chicago Fire S05E15) "Emotional Proximity" (Chicago P.D. S04E16) "Fake" (Chicago Justice S01E01) </Td> <Td> Appearing in Series A: S. Epatha Merkerson, Oliver Platt, Marlyne Barrett, Yaya DaCosta, Brian Tee, Nick Gehlfuss, Torrey DeVitto, Jason Beghe, Sophia Bush, Marina Squerciati, Elias Koteas, Carl Weathers Appearing in Series B: Philip Winchester, Jon Seda, Taylor Kinney, Eamonn Walker, Nick Gehlfuss, Torrey DeVitto, Kara Killmer, Brian Tee Appearing in Series C: Elias Koteas, Jason Beghe, Taylor Kinney </Td> <Td> March 1, 2017 </Td> <Td> A warehouse fire leaves Olinsky's daughter and 38 others dead . Chicago P.D.'s Intelligence Unit does all it can to track down the arsonist behind this tragedy . In Justice, the prime suspect's attorney does everything he can to get him acquitted, while ASA Peter Stone works really hard to find the way to get justice for the victims of the attack . </Td> <Td> Three - Part Crossover </Td> </Tr> <Tr> <Td> Chicago P.D. </Td> <Td> Chicago Fire </Td> <Td> N / A </Td> <Td> "Profiles" (Chicago P.D. S05E16) "Hiding Not Seeking" (Chicago Fire S06E13) </Td> <Td> Appearing in Series A: Jesse Spencer, Taylor Kinney, Monica Raymund, Kara Killmer, David Eigenberg, Joe Minoso, Christian Stolte, Eamonn Walker Appearing in Series B: Jason Beghe, Jon Seda, Amy Morton, Patrick John Flueger, Jesse Lee Soffer, Tracy Spiridakos, Marina Squerciati, LaRoyce Hawkins </Td> <Td> March 7, 2018 March 8, 2018 </Td> <Td> Intelligence and Firehouse 51 pursue a serial bomber targeting the media . </Td> <Td> Two - Part Crossover </Td> </Tr> <Tr> <Td> Chicago Fire </Td> <Td> Chicago Med </Td> <Td> Chicago P.D. </Td> <Td> "Going to War" (Chicago Fire S07E02) "When to Let Go" (Chicago Med S04E02) "Endings" (Chicago P.D. S06E02) </Td> <Td> Appearing in Series A: Nick Gehlfuss, Torrey DeVitto, Brian Tee, Jesse Lee Soffer, S. Epatha Merkerson Appearing in Series B: Jesse Spencer, Taylor Kinney, Kara Killmer, David Eigenberg, Yuri Sardarov, Joe Minoso, Christian Stolte, Miranda Rae Mayo, Jesse Lee Soffer Appearing in Series C: Taylor Kinney, Nick Gehlfuss, Brian Tee, Eamonn Walker, S. Epatha Merkerson, Annie Ilonzeh </Td> <Td> October 3, 2018 </Td> <Td> A fire consumes a 25 - story apartment complex, sending the residents to Chicago Med for treatment . When Intelligence discovers the cause of the fire, the case gets personal for Jay Halstead . </Td> <Td> Three - Part Crossover </Td> </Tr> </Table> <Tr> <Th_colspan="3"> Crossover Between </Th> <Th> Episode Title </Th> <Th> Actors Appearing Outside Their Series </Th> <Th> Date Broadcast </Th> <Th> Description </Th> <Th> Type </Th> </Tr>

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