Eternity

"Eternity" is the fifth episode of Season 3.

Summary
A notable neuroscientist is found dead, and Pierce and Moretti must determine how the killer infiltrated the victim's impenetrable study to commit the deadly deed. Meanwhile, Pierce's father moves in with Pierce and Lewicki.

Main Cast

 * Eric McCormack as Daniel Pierce
 * Rachael Leigh Cook as Kate Moretti
 * Arjay Smith as Max Lewicki
 * Kelly Rowan as Natalie Vincent

Recurring Cast

 * LeVar Burton as Paul Haley
 * Scott Wolf as Donnie Ryan (mentioned only)

Guest Stars

 * Peter Coyote as Pierce as James Alan Pierce
 * Paul Cassell as Dr. Landon Jennings/L-Dub
 * Christina Cox as Mrs. Jennings
 * Bahar Soomekh as Yale

Diagnoses

 * James Alan Pierce suffers from a Alzheimer's disease
 * Dr. Landon Jennings suffered from Magnetic Apraxia