Universal has wrangled former “Mad Men” actress Abigail Spencer for director Jon Favreau’s (Iron Man) sci-fi-western Cowboys & Aliens. The 28-year-old brunette will play Alice, a prostitute who helps cure former flame and hero Zeke Jackson (Daniel Craig) of all wickedness.

Set in the mid 19th century, Cowboys & Aliens follows a group of cowboys and Indians on a mission to stop an alien race from enslaving mankind. “LOST” co-creator Damon Lindelof wrote the script with his go-to collaborators Alex Kurtzman and Roberto Orci. Steven Spielberg, Ron Howard and Brian Grazer serve as producers.

Spencer joins an impressive cast that includes Craig, Harrison Ford, Olivia Wilde, Sam Rockwell, Walton Goggins, Paul Dano, and Clancy Brown.

Cowboys & Aliens is currently filming in Santa Fe, New Mexico with a target release date of July 29, 2011.