To improve his performance as the ship's physician, The Doctor undertakes a personality enhancement project on the Holodeck, incorporating several accomplished historical figure's traits and temperaments into his Starfleet database. But he also adopts several aberrant character traits from those non-fictional figures and is soon over taken by a dangerous, cruel Mister Hyde-like personality.

Meanwhile, the U.S.S. Voyager hosts the Mikhal Travelers, a race of explorers with extensive knowledge of the territory. As Kes spends time with one of them, Zahir, she's overwhelmed with feelings that, having lived one third of her life, she's reached a crossroads and asks permission to leave the ship.

Cast:

Kate Mulgrew as Captain Kathryn Janeway
Robert Beltran as Chakotay
Roxann Dawson as B'Elanna Torres
Jennifer Lien as Kes
Robert Duncan McNeill as Tom Paris
Ethan Phillips as Neelix
Robert Picardo as The Doctor
Tim Russ as Tuvok
Garrett Wang as Harry Kim

Guest Cast:

David Lee Smith as Zahir
Stephen Davies as Nakahn
Christopher Clarke as Lord Byron

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