Allison Williams joins Benedict Cumberbatch's Showtime series - A.V. Club

A.V. Club
Allison Williams joins Benedict Cumberbatch's Showtime series
A.V. Club
Showtime's adaptation of Edward St. Aubyn's Patrick Melrose novels already has Benedict Cumberbatch in the lead and Jennifer Jason Leigh and Hugo Weaving playing Cumberbatch's parents, and now another fairly famous person had joined the cast.