Westcott acted on stage in New York, Utah, and California, before he made the move to film.[5] He became a contract player with Warner Brothers and appeared in 37 films between 1928 and 1935,[6] starring alongside such up and comers as Bette Davis, Loretta Young and James Cagney.
After appearing in a string of Pre-Code productions, and working with such directors as William A. Wellman, Busby Berkeley and William Dieterle, his film career ended with his death on October 30, 1935, one week before his 32nd birthday, from a skull fracture[7] sustained in a polo accident that had occurred three days earlier.[8]