The Curse

S4, E13: When Dr. Daniel Jackson's old archeology professor Dr. Jordan dies in a mysterious lab explosion Daniel pays a return visit to his old academic stomping grounds. As Daniel reacquaints himself with his former colleagues — including his former girlfriend Sarah Gardner Jordan's research assistant — he begins to suspect Jordan's death might not have been an accident. Daniel discovers that one of the items the professor was studying an ancient Egyptian jar contains a perfectly preserved Goa'uld symbiote. Apparently a crack in the vessel compromised the sedative solution within killing the creature. But further investigation reveals that a second jar might have existed. With a Goa'uld apparently stalking the campus and the local community abuzz with talk of an ancient curse Daniel must unravel the mystery before it's too late.