Sanctuary Season 2 Episode 11: Haunted
After the team rescues the passengers of a sinking ship off the coast of South Africa, Magnus suspects Druitt of murdering one of them, indicating his insanity has returned. One of the passangers temporarily kills Druitt, then revives, and locksdown the base. However, the base is in fact under control of an energy creature, which turned Druitt insane. The creature attempts to kill everyone in order to spread, but Will is able to reach the computer mainframe and reboot the power, allowing Henry to free the others. With little time, Henry lowers the EM shield to allow Druitt to teleport to the creature to have him as a host again, and teleport himself into oblivion, sacrificing himself to destroy the creature.