Stargate Atlantis: Angelus

When Colonel Ellis encounters an Ancient on the borders of Asuran space, the Atlantis team think their luck has changed. Charming and likable, Angelus connects with each team member in a unique way - more than that, he offers them a weapon that could put an end to their war with both the Wraith and the Asurans. But all is not what it seems, and even Angelus does not know the truth about his identity...