<Tr> <Td> 275 </Td> <Td> 20 </Td> <Td> "Unforgettable" </Td> <Td> April 26, 2017 (2017 - 04 - 26) </Td> <Th> 1.3 / 5 </Th> <Th> 6.91 </Th> <Th> 13 </Th> <Th> 16 </Th> <Th> </Th> </Tr> <Tr> <Td> 276 </Td> <Td> 21 </Td> <Td> "Green Light" </Td> <Td> May 3, 2017 (2017 - 05 - 03) </Td> <Th> 1.5 / 5 </Th> <Th> 7.37 </Th> <Th> 13 </Th> <Th> 17 </Th> <Th> 6 </Th> </Tr> <Tr> <Td> 277 </Td> <Td> 22 </Td> <Td> "Red Light" </Td> <Td> May 10, 2017 (2017 - 05 - 10) </Td> <Th> 1.6 / 6 </Th> <Th> 8.12 </Th> <Th> 9 </Th> <Th> 14 </Th> <Th> </Th> </Tr> <Table> <Tr> <Th> No. in series </Th> <Th> No. in season </Th> <Th> Episode </Th> <Th> Air date </Th> <Th> Time slot (EST) </Th> <Th> 18--49 rating increase </Th> <Th> Viewers (millions) increase </Th> <Th> Total 18--49 </Th> <Th> Total viewers (millions) </Th> <Th> Ref </Th> </Tr> <Tr> <Td> 256 </Td> <Td> </Td> <Td> "The Crimson King" </Td> <Td> September 28, 2016 (2016 - 09 - 28) </Td> <Td> Wednesday 9: 00 P.M. </Td> <Th> 1.1 </Th> <Th> 3.83 </Th> <Th> 3.0 </Th> <Th> 12.41 </Th> <Th> </Th> </Tr> <Tr> <Td> 257 </Td> <Td> </Td> <Td> "Sick Day" </Td> <Td> October 5, 2016 (2016 - 10 - 05) </Td> <Th> 1.1 </Th> <Th> 3.76 </Th> <Th> 2.5 </Th> <Th> 11.32 </Th> <Th> </Th> </Tr> <Tr> <Td> 258 </Td> <Td> </Td> <Td> "Taboo" </Td> <Td> October 12, 2016 (2016 - 10 - 12) </Td> <Th> 1.1 </Th> <Th> 3.41 </Th> <Th> 2.8 </Th> <Th> 11.81 </Th> <Th> </Th> </Tr> <Tr> <Td> 259 </Td> <Td> </Td> <Td> "Keeper" </Td> <Td> October 26, 2016 (2016 - 10 - 26) </Td> <Th> 1.1 </Th> <Th> 3.81 </Th> <Th> 2.7 </Th> <Th> 11.48 </Th> <Th> </Th> </Tr> <Tr> <Td> 260 </Td> <Td> 5 </Td> <Td> "The Anti-Terror Squad" </Td> <Td> November 9, 2016 (2016 - 11 - 09) </Td> <Th> 0.7 </Th> <Th> 2.38 </Th> <Th> 2.0 </Th> <Th> 9.76 </Th> <Th> </Th> </Tr> <Tr> <Td> 261 </Td> <Td> 6 </Td> <Td> "Elliott's Pond" </Td> <Td> November 16, 2016 (2016 - 11 - 16) </Td> <Th> 1.1 </Th> <Th> 3.57 </Th> <Th> 2.5 </Th> <Th> 11.20 </Th> <Th> </Th> </Tr> <Tr> <Td> 262 </Td> <Td> 7 </Td> <Td> "Mirror Image" </Td> <Td> November 30, 2016 (2016 - 11 - 30) </Td> <Th> 1.1 </Th> <Th> 3.71 </Th> <Th> 2.5 </Th> <Th> 11.15 </Th> <Th> </Th> </Tr> <Tr> <Td> 263 </Td> <Td> 8 </Td> <Td> "Scarecrow" </Td> <Td> December 7, 2016 (2016 - 12 - 07) </Td> <Th> 1.2 </Th> <Th> 3.67 </Th> <Th> 2.5 </Th> <Th> 11.44 </Th> <Th> </Th> </Tr> <Tr> <Td> 264 </Td> <Td> 9 </Td> <Td> "Profiling 202" </Td> <Td> January 4, 2017 (2017 - 01 - 04) </Td> <Th> 1.1 </Th> <Th> 3.84 </Th> <Th> 2.5 </Th> <Th> 11.11 </Th> <Th> </Th> </Tr> <Tr> <Td> 265 </Td> <Td> 10 </Td> <Td> "Seek and Destroy" </Td> <Td> January 11, 2017 (2017 - 01 - 11) </Td> <Th> 1.1 </Th> <Th> 3.43 </Th> <Th> 2.5 </Th> <Th> 10.97 </Th> <Th> </Th> </Tr> <Tr> <Td> 266 </Td> <Td> 11 </Td> <Td> "Surface Tension" </Td> <Td> February 1, 2017 (2017 - 02 - 01) </Td> <Th> 1.0 </Th> <Th> 3.49 </Th> <Th> 2.3 </Th> <Th> 10.94 </Th> <Th> </Th> </Tr> <Tr> <Td> 267 </Td> <Td> 12 </Td> <Td> "A Good Husband" </Td> <Td> February 8, 2017 (2017 - 02 - 08) </Td> <Th> 0.9 </Th> <Th> 3.42 </Th> <Th> 2.1 </Th> <Th> 10.12 </Th> <Th> </Th> </Tr> <Tr> <Td> 268 </Td> <Td> 13 </Td> <Td> "Spencer" </Td> <Td> February 15, 2017 (2017 - 02 - 15) </Td> <Th> 0.9 </Th> <Th> 3.43 </Th> <Th> 2.2 </Th> <Th> 10.78 </Th> <Th> </Th> </Tr> <Tr> <Td> 269 </Td> <Td> 14 </Td> <Td> "Collision Course" </Td> <Td> February 22, 2017 (2017 - 02 - 22) </Td> <Th> 0.9 </Th> <Th> 3.34 </Th> <Th> 2.2 </Th> <Th> 10.67 </Th> <Th> </Th> </Tr> <Tr> <Td> 270 </Td> <Td> 15 </Td> <Td> "Alpha Male" </Td> <Td> March 1, 2017 (2017 - 03 - 01) </Td> <Th> 0.7 </Th> <Th> 2.93 </Th> <Th> 2.0 </Th> <Th> 9.54 </Th> <Th> </Th> </Tr> <Tr> <Td> 271 </Td> <Td> 16 </Td> <Td> "Assistance is Futile" </Td> <Td> March 15, 2017 (2017 - 03 - 15) </Td> <Th> 1.0 </Th> <Th> 3.38 </Th> <Th> 2.3 </Th> <Th> 10.90 </Th> <Th> </Th> </Tr> <Tr> <Td> 272 </Td> <Td> 17 </Td> <Td> "In The Dark" </Td> <Td> March 22, 2017 (2017 - 03 - 22) </Td> <Th> 1.1 </Th> <Th> 3.40 </Th> <Th> 2.4 </Th> <Th> 10.86 </Th> <Th> </Th> </Tr> <Tr> <Td> 273 </Td> <Td> 18 </Td> <Td> "Hell's Kitchen" </Td> <Td> March 29, 2017 (2017 - 03 - 29) </Td> <Th> 1.0 </Th> <Th> 3.26 </Th> <Th> 2.2 </Th> <Th> 10.16 </Th> <Th> </Th> </Tr> <Tr> <Td> 274 </Td> <Td> 19 </Td> <Td> "True North" </Td> <Td> April 5, 2017 (2017 - 04 - 05) </Td> <Th> 0.9 </Th> <Th> 3.11 </Th> <Th> 2.2 </Th> <Th> 10.15 </Th> <Th> </Th> </Tr> <Tr> <Td> 275 </Td> <Td> 20 </Td> <Td> "Unforgettable" </Td> <Td> April 26, 2017 (2017 - 04 - 26) </Td> <Th> 0.7 </Th> <Th> 2.42 </Th> <Th> 2.0 </Th> <Th> 9.33 </Th> <Th> </Th> </Tr> <Tr> <Td> 276 </Td> <Td> 21 </Td> <Td> "Green Light" </Td> <Td> May 3, 2017 (2017 - 05 - 03) </Td> <Th> 0.9 </Th> <Th> 3.30 </Th> <Th> 2.4 </Th> <Th> 10.51 </Th> <Th> </Th> </Tr> <Tr> <Td> 277 </Td> <Td> 22 </Td> <Td> "Red Light" </Td> <Td> May 10, 2017 (2017 - 05 - 10) </Td> <Th> 0.9 </Th> <Th> 3.20 </Th> <Th> 2.5 </Th> <Th> 11.31 </Th> <Th> </Th> </Tr> </Table>

When does reid come back in season 12