Stardate 45429.3: A party of telepathic Ullians is visiting the Enterprise, ready to share their unique gift of probing into the mind and recovering lost memories. During their visit, Troi reminisces about an earlier encounter with Riker, and then her memory is invaded by an image of one of the Ullians. Dr. Crusher finds Troi in a coma, and she and Riker are the next to have their memories invaded. Data and Geordi try to track down the mystery ailment that has rendered key officers comatose – and discover that there may be no disease involved and one of the Ullians could be behind the telepathic intrusions.
teleplay by Pamela Gray & Jeri Taylor
story by Shari Goodhartz & T. Michael Gray and Pamela Gray
directed by Robert Weimer
music by Dennis McCarthy
Guest Cast: Rosalind Chao (Keiko), Ben Lemon (Jev), David Sage (Tarmin), Rick Fitts (Dr. Martin), Eve Brenner (Inad), Doug Wert (Jack Crusher), Craig Benton (Crewman Davis), Majel Barrett (Computer Voice)
LogBook entry by Earl Green