<P> While in rehab, Jesse is told by a counselor (Jere Burns) to accept himself for who he is . At this point, Jesse has learned that Jane's father, an air traffic controller, was so distraught over her death that he inadvertently caused a deadly mid-air collision . Jesse tells Walt that he has taken the counselor's advice and accepted himself as the "bad guy". Jesse leaves rehab clean and sober, and decides to settle unfinished business . First, with help from Saul, Jesse dupes his parents into selling him his aunt's house, at a drastically reduced price . </P> <P> Hank correctly deduces that Jesse's RV is the rolling meth lab he has been looking for and tracks it down to a local junkyard . Walt and Saul send a fake emergency phone call to Hank, stating that Hank's wife Marie (Betsy Brandt) is in the hospital, thereby giving Walt and Jesse enough time to destroy the RV in a compactor . A furious Hank follows Jesse home and beats him into unconsciousness . The incident leads to Hank's getting temporarily suspended from the DEA . While Jesse is hospitalized, Walt--who is now working for Gus as a meth cook--persuades Gus to renew their partnership . Jesse and Walt cook larger amounts of meth in Gus' underground "superlab", earning considerably more money . </P> <P> Jesse becomes romantically involved with Andrea Cantillo (Emily Rios), a single mother and recovering meth addict from his Narcotics Anonymous meetings . He eventually discovers that her 11 - year - old brother, Tomas, had killed Combo on behalf of two dealers competing with Combo . Jesse concocts a plan to kill the dealers with ricin that Walt had earlier created, but Jesse is forced to cancel the plan after learning the dealers work for Gus . However, after Tomas is found murdered, an enraged Jesse sets out to kill the dealers anyway . Walt intervenes at the last moment, killing the two dealers and telling Jesse to run . </P> <P> After Jesse goes into hiding, Gus replaces him with Gale Boetticher (David Costabile), Walt's previous assistant in the superlab . Walt realizes Gus is plotting to have Gale master his and Jesse's meth formula as part of a larger plan to be rid of him . To prevent this, Walt plots to have Jesse pre-emptively kill Gale . Jesse begs Walt to go to the police instead, insisting that he doesn't have it in him to kill someone . When Walt is cornered by Gus' men Mike Ehrmantraut (Jonathan Banks) and Victor (Jeremiah Bitsui) at the superlab, he calls Jesse and tells him that he will have to kill Gale . Jesse shows up at Gale's apartment and, after a moment's hesitation, shoots him dead . </P>

When do jesse and walt start cooking together again