Misfits Series 3 Episode 8

In the series finale, a medium in the community centre brings several ghosts back to life. The first two probation officers come back, as well as Rachel, who brainwashed the community into becoming evangelical Christians in the season 1 finale, and believe they all have some 'unfinished business' to complete before they are able to 'move on'. Alisha ends up dying and Simon informs the rest of the gang that he is Superhoodie. In order to go back in time to save Alisha, Simon obtains a new power from Seth, but is unable to return back to the future. Simon travels in time to the start of the sixth episode of series one, and goes to Seth to buy the power of immunity, thus making him able to touch Alisha, and cause her to fall in love with him.