Recap / The X-Files S02 E04 "Sleepless"

When Mulder's mysterious source gives him a tip on a case, Mulder is nonplussed to discover that it is already being investigated by another agent, one Alex Krycek. The case involves a noted sleep scientist who shows every sign of having burned to death—except without any fire. Mulder and his new partner must work together to uncover a government atrocity 24 years in the making—but is Krycek all that he appears?