The Tomb

The Tomb is the eighth episode of the fifth season of Stargate SG-1.

Plot
SG-1 must reluctantly join a fellow Russian team (headed by Col. Zukhov) in a daring mission to uncover the fate of a lost Russian team and a powerful Goa'uld device, the Eye of Tiamat. After entering the tomb, SG-1 and the Russians split up to search. SG-1 discovers the remains of a previous Russian team member that has apparently been gnawed upon, and the Russians find an ancient Goa'uld Sarcophagus. O'Neill orders Zukhov to hold his ground, but Zukhov moves to investigate the sarcophagus. In so doing, he sets off a trap that shuts the door to the temple, and Lt. Marchenko is crushed by the door trying to keep it open.

Trapped inside, the teams force open the sarcophagus and find a skeleton inside with similar gnawing marks. With a little research of the carvings in the room, Daniel determines Marduk was trapped inside the sarcophagus with another creature by his priests. The teams split up into pairs to find this creature, while Daniel stays behind to study the room. After a short amount of time in the search, Sam and Lt. Tolinev are attacked, and Tolinev is bitten, apparently poisoned. Whatever the creature is, it killed the Russians and, worst of all, Sam senses a Goa'uld symbiote inside it. When Sam and Teal'c encounter the creature later, it drops dead from wounds from its previous encounter with Sam, and Teal'c concludes that the symbiote is no longer present in the creature (by cutting open the creature's neck). Teal'c and Sam inform the rest of the team that there is a Goa'uld in their midst.

Colonels O'Neill and Zukhov are stuck in a standoff, each suspecting each other of being hosts, and refusing to lower their weapons. The real Goa'uld (in Vallarin) confronts them and attacks Jack with an earlier retrieved hand device. It demands the Eye of Tiamat, an allegedly powerful piece of Goa'uld technology of unknown function. Zukhov found it earlier with the journal, and pretends to give it to the Goa'uld. Instead, he arms a grenade and tosses it to him. The Goa'uld realizes too late and the explosion buries the host, Zukhov and the Eye. Jack manages to avoid the cave-in and escape unharmed.

Meanwhile, Daniel studies the writings on the walls of the tomb to realize that there is a ring transporter in the temple, and Teal'c locates a secret panel that exposes Goa'uld control crystals, which would allow SG-1 to activate the ring transporter. As they get ready to leave, the Goa'uld shows up to threaten his revenge. As the ring transporter dematerializes the four members of SG-1 and Tolinev, Major Carter activates a ten second timer on a large quantity of C4, killing the host Goa'uld and collapsing the already very unstable tomb. If the Goa'uld survived the initial explosion, he would probably soon suffocate under the tons of stone and dust that would subsequently bury him. Back on Earth, in the SGC briefing room, the surviving Russian backs up O'Neill's account to her superior, but the debriefing Russian Colonel suspects that the SGC is hiding something, and they are clearly disappointed at the failure to recover the Eye of Tiamat. Jack tells the Russian not to expect another joint mission, since their priority should have been the rescue part of the rescue mission, not the Eye of Tiamat part.

Goofs

 * Marduk is seen using the shield function of a hand device despite it being mentioned that the technology was fairly new.