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Echoes of the Mind (Part 2) is the second episode (two-part episode) of the fifth season of Magnum, P.I. which originally aired on October 4, 1984.


The morning after Thomas' sleepover, it becomes apparent that Diane has multiple personalities when "Deirdre" emerges and disparages Diane as weak and naive, while describing herself as strong and sexy. Diane becomes too distraught to live and commits suicide.





  • Carolyn Seymour as Elizabeth, Lady Ashley
  • Sharon Stone as Diane Dupres / Deirdre Dupres
  • June Chadwick as English Flight Attendant
  • George Innes as David Billingsworth


  • Magnum is, once again, eating Fig Newtons dipped in milk.
  • T.C. is wearing a gray "Grambling State Univ." t-shirt, with the number "58" on it. Grambling State is T.C.'s alma mater.
  • In exchange for a favor, Magnum gives Rick his two Lionel Richie "best seats in the house" concert tickets.
  • This episode apparently came up short in editing, for both the recap at the beginning and the end credits are unusually lengthy.


Diane (points gun at Magnum): Sorry darling. You really are wonderful, but survival... is survival.
Magnum: Don't let her kill me Diane.
Diane: Run Thomas, run!
Magnum: I can't Diane....Diane, Diedre's dead.
(Diane shoots the lamp next to Magnum)
Diane: How's that for dead!?
Magnum: She's dead. You don't need her to survive.
Diane: Liar!!
Magnum: Isn't that what the doctor's told you? You don't need Diedre to survive.
Diane: She can't live without me! I'm the strong one! I've always been the strong one!
Magnum: No...Diane's the strong one. She's the one who lived.
Diane: No! (Fires another shot)
Magnum: Diedre's dead Diane. You can live without her.
Diane: No, I can't. I can't control her. She'll come back, maybe not for years, but she'll come back and when she does, she'll kill you!
Magnum: No, you can get her out of your life forever. We can do it together. I love you.
Diane: I love you.
(Diane cocks gun and points it at her head)
Magnum: Nooooo!!!
(Diane kills herself)
  Season 5 (1980)
Echoes of the Mind (Part 1)Echoes of the Mind (Part 2)Mac's BackThe Legacy of Garwood HuddleUnder WorldFragmentsBlind JusticeMurder 101Tran Quoc JonesLuther Gillis: File No. 001Kiss of the SabreLittle GamesProfessor Jonathan HigginsCompulsionAll for One (Part 1)All for One (Part 2)The Love-for-Sale BoatLet Me Hear the MusicMs. JonesThe Man from MarseillesTorah, Torah, TorahA Pretty Good Dancing Chicken