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A Long, Strange Trip is the fourteenth episode of the fifteenth season of the NBC medical drama series ER . It premiered on February 5, 2009.

"A Long, Strange Trip"
Season 15, Episode 14
A Long Strange Trip.jpg
Air date February 5, 2009
US viewers 7.30 M
Written by Joe Sachs
Directed by Mimi Leder
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Gates and Morris tend to an elderly man who was assaulted on the street. Sam 's sister shows up unexpectedly. Brenner and Dubenko clash while treating a mother thought to have late stage cancer. Dr. Morgenstern returns to the ER to assist a former mentor who is seriously ill.

Cast and Characters


Parminder Nagra as Dr. Neela Rasgotra

John Stamos as Dr. Tony Gates

Linda Cardellini as Nurse Sam Taggart

Scott Grimes as Dr. Archie Morris

David Lyons as Dr. Simon Brenner

Angela Bassett as Dr. Cate Banfield

Noah Wyle as Dr. John Carter


Troy Evans as Frank Martin

William H. Macy as Dr. David Morgenstern

Leland Orser as Dr. Lucien Dubenko

Gil McKinney as Dr. Paul Grady

Montae Russell as Zadro

Laura Cerón as Nurse Chuny Marquez


Shannon Woodward as Kelly Taggart

Jake Abel as Dylan

Leonard Roberts as Officer Jeffries

Tomy Dunster as Dr. Horta


  • In this episode, William H. Macy reprises his role of Dr. David Morgenstern after eleven years. He last appeared on the series in the Season 4 episode "Shades of Gray."
  • Although listed in the opening credits, Angela Bassett does not appear in this episode.
  • Music: "Truckin'," The Grateful Dead


  1. Cancel Bear, The (February 6, 2009). "Thursday Ratings: With CBS Away, Grey's And Practice Come Out To Play ". TV by the Numbers. (May 24, 2015).