MEDIUM “About Last Night” (Season 5 Episode 4) February 21, 2009 Medium Watch a sneak peek of Medium‘s Season 5 Episode 4 “About Last Night” airing Monday Feb 23 (8-9 p.m. ET). Read all our Medium coverage here. Episode Synopsis: MEDIUM “About Last Night” (Season 5 Episode 4) – Allison (Emmy winner Patricia Arquette) awakes in the middle of the night beneath a freeway overpass uncertain as to how she got there and unaware of where she is. She soon realizes she has no recollection of the last six hours of her life and begins to suspect she may have killed a man with her car. Meanwhile, Ariel (Sofia Vassilieva) is learning how to drive and she seems to be doing very well but her father, Joe (Jake Weber), is oddly frustrated by it. Miguel Sandoval, David Cubitt, Maria Lark and Madison & Miranda Carabello also star. Nestor Serrano also guest stars. Show Cast: Sofia Vassilieva, Maria Lark, David Cubitt, Jake Weber, Patricia Arquette, Miguel Sandova Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Google+ (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Pocket (Opens in new window)