Dr. Apgar, a scientist working on Krueger waves, is killed when the station he was working on suddenly explodes moments after Riker talks with him privately. Chief Investigator Krag, arrives on board the Enterprise and demands Riker be turned over to him to face trial for murder. Picard, unwilling to release Riker without a hearing convinces the Chief Investigator to allow the circumstances of the incident be recreated on the holodeck with the help of statements from all parties concerned. Meanwhile, bursts of unknown radiation, able to cause damage to metal, plague the Enterprise.

Producers: Ira Steven Behr, Hans Beimler and Richard Manning
Director: Cliff Bole
Writer: Ed Zuckeran

Guest Cast:

Craig Richard Nelson (Krag)
Gina Hecht (Manua)
Mark Margolis (Dr. Apgar)
Juli Donald (Tayna)