Sinverguenza is Spanish for scoundrel.
One of the wanted posters on the bulletin board shows Katharine Ann Power. She had been the getaway driver in a 1970 bank robbery in Massachusetts. One of her cohorts murdered a police officer. Ms. Power surrendered in 1993, and was paroled in 1999.
Marty says he enjoyed their brief encounter. He refers to the movie Brief Encounter (1945), written by Noel Coward.