Dr. William Hayward - Twin Peaks

Twin Peaks

Main cast, played by Warren Frost

Episode 1x01: Pilot (Apr 8, 1990)
Episode 1x02: Traces to Nowhere (Apr 12, 1990)
Episode 1x03: Zen, or the Skill to Catch a Killer (Apr 19, 1990)
Episode 1x04: Rest in Pain (Apr 26, 1990)
Episode 1x05: The One-Armed Man (May 3, 1990)
Episode 1x06: Cooper's Dreams (May 10, 1990)
Episode 1x07: Realization Time (May 17, 1990)
Episode 1x08: The Last Evening (May 23, 1990)
Episode 2x01: May the Giant Be with You (Sep 30, 1990)
Episode 2x02: Coma (Oct 6, 1990)
Episode 2x03: The Man Behind the Glass (Oct 13, 1990)
Episode 2x04: Laura's Secret Diary (Oct 20, 1990)
Episode 2x07: Lonely Souls (Nov 10, 1990)
Episode 2x08: Drive with a Dead Girl (Nov 17, 1990)
Episode 2x09: Arbitrary Law (Dec 1, 1990)
Episode 2x10: Dispute Between Brothers (Dec 8, 1990)
Episode 2x12: The Black Widow (Jan 12, 1991)
Episode 2x13: Checkmate (Jan 19, 1991)
Episode 2x14: Double Play (Feb 2, 1991)
Episode 2x15: Slaves and Masters (Feb 9, 1991)
Episode 2x17: Wounds and Scars (Mar 28, 1991)
Episode 2x18: On the Wings of Love (Apr 4, 1991)
Episode 2x19: Variations and Relations (Apr 11, 1991)
Episode 2x20: The Path to the Black Lodge (Apr 18, 1991)
Episode 2x21: Miss Twin Peaks (Jun 10, 1991)
Episode 2x22: Beyond Life and Death (Jun 10, 1991)

Guest cast, played by Warren Frost