The 56th episode of the prequel spinoff Star Trek: Enterprise airs on UPN. 
Deep in the Delphic Expanse, the Enterprise encounters a drifting Vulcan science vessel – a ship that was T’Pol’s last assignment before serving at the Vulcan consulate on Earth. It has managed to drift through a chaotic asteroid field too dense and dangerous for the Enterprise to navigate, so Archer takes a small team in via shuttlepod to search for survivors. As it turns out, the Vulcan ship’s entire crew has survived – but they have become infected with a condition that breaks down their emotional control and leaves them in a zombie-like state, attacking anyone who comes near them. Archer and his boarding party are eventually beseiged in a closed-off part of the ship, and T’Pol is infected with this disease during a skirmish with the Vulcan crew, growing increasingly paranoid and violent toward her crewmates.
teleplay by Jonathan Fernandez
story by Jonathan Fernandez & Terry Matalas
directed by David Livingston
music by Dennis McCarthyCast: Scott Bakula (Captain Jonathan Archer), Jolene Blalock (Subcommander T’Pol), John Billingsley (Dr. Phlox), Dominic Keating (Lt. Malcolm Reed), Anthony Montgomery (Ensign Travis Mayweather), Linda Park (Ensign Hoshi Sato), Connor Trinneer (Commander Charles “Trip” Tucker III), Sean McGowan (Corporal Hawkins)
LogBook entry by Earl Green