Principal actors Liam Neeson, Maggie Grace and Famke Janssen are already slated to return for the Taken sequel, but director Olivier Megaton (Colombiana) needs new actors to replace all the ones Bryan Mills (Neeson) killed in the original. We know the villain will be Rade Serbedzija (Snatch), playing the father of one of the slain kidnappers who takes Mills and his ex-wife (Janssen) hostage. Luke Grimes (Brothers & Sisters) has been cast as the love interest of Mills’ daughter (Grace) and will most likely play a part in helping her rescue her parents.In other casting news, Barry Sloane (Holby City) will join Michelle Monaghan (Source Code) and Michael Keaton as Keaton’s partner in crime in Penthouse North. Lastly, Jerry Ferrara (Entourage) has been added to the cast of airplane-thriller, 7500. The film, by director Takashi Shimizu (The Grudge) also stars Ryan Kwanten, Amy Smart, Leslie Bibb and Jamie Chung. Hit the jump for more on each project.The addition of Grimes to the Taken 2 cast comes via Variety. The sequel will feature the return of screenwriters Luc Besson and Robert Mark Kamen, who are hoping to repeat the surprise success of the original. Grimes was most recently in the news for his addition to the shortlist of male leads for Roland Emmerich’s Singularity. Taken 2 hits theaters on October 5th, 2012.Variety also reported on Sloane’s role to accompany Keaton on his crime spree in Penthouse North. The film, recently picked up by Dimension, stars Monaghan as a blind photojournalist who happens to have “a fortune in stolen diamonds hidden in her penthouse apartment.” Sloane will play Chad, who acts the part of helpful stranger in order to glean necessary information about his mark. But all does not go well for Chad, as he finds his life in danger and must rely on his sadistic boss (Keaton) to save him. Joseph Ruben (Sleeping with the Enemy) is directing from a David Loughery (Obsessed) script.Finally, Deadline reported on the addition of Ferrara to 7500. The pic centers on a collection of passengers on an international flight who experience strange events after the mysterious death of a passenger. 7500 also stars Christian Serratos (The Twilight Saga) and Scout Taylor-Compton (Halloween).