"Odd Thomas" star Addison Timlin is in negotiations to join the cast of Lionsgate's action-comedy "
Stand Up Guys," which Sidney Kimmel Entertainment and Lakeshore Entertainment are producing.
Story follows two former hitmen in their twilight years who decide to spend one last night of debauchery together before one has to kill the other. Timlin is in talks to play Walken's granddaughter, one of two key female roles.