Stargate SG-1: The Light

SINOSSI

SG-5's Lieutenant Barber commits suicide by jumping into the Stargate shortly after a mission on a planet where a since about 200 years abandoned Goa'uld palace is studied by Daniel, who soon develops violent mood swings and is committed to hospital with a neurotransmitter brain condition, presumed fatal after all other SG-5 members die; alas meanwhile SG-3 has visited the planet, finding only the light installation Daniel reported as particularly fascinating and human teenage boy Loran, who hid for Daniel's expedition but now tells Jack he was left there by his parents, scientific researchers. Back in SGC, Jack also develops symptoms. Sam and Dr. Frasier conclude it must be some addiction linked to the light, so when Daniel is nearly terminal Jack, who might not have been exposed too long himself, must bring him back. Jack insists to try turning off the light, and leans on Loran, who is looking for a father-figure, even gives Teal'c an early 'birthday present', but indeed has a dark secret..