Tom and B'Elanna try out Tom's new holodeck program — a mid-20th century movie theater — only to find Bajoran crewman Tabor comatose in the front row. Though still alive, Tabor has suffered an attack that left his skull cobwebbed with microfractures. Two more crew members soon suffer the same fate, and all three are former Maquis. Chakotay decides that the attacker must be a member of Voyager's original Starfleet contingent, and puts his fellow ex-Maquis on alert (as well as ordering them to arm themselves). Rumors and paranoia run rampant as Tuvok tries to investigate the increasing number of assaults, but when B'Elanna and Chakotay become the next victims, these worries seem well founded. Tuvok's obsessive quest to solve the crime wave ultimately leads him to conclude that he himself is the prime suspect.

Derek McGrath (Crewman Chell)
Keith Szarabajka (Teero Anaydis)
Jad Mager (Ensign Tabor)
Ronald Robinson (Sek)
Carol Krnic (Crewman Jor)
Scott Alan Smith (Doyle)
Mark Rafael Truitt (Crewman Yosa)

• Crewman Chell also appeared in the 1st season episode "Learning Curve".
  
• Ensign Tabor was introduced in the 5th season episode "Nothing Human".
  
• A Vulcan female is seen with Chakotay as a Maquis crewman. It has been stated on more than one occasion that the only Vulcans on board Voyager are Tuvok and Vorik.
  
• At this point, Voyager is 35,000 light years from Earth.