The fourth and final season of the ABC American television drama series Revenge premiered on September 28, 2014.

James Tupper and Karine Vanasse, who played David Clarke and Margaux LeMarchal respectively, were upgraded to series regulars.

The principal cast were joined by two new series regulars: Brian Hallisay as Ben Hunter, an aspiring police detective and partner of Jack Porter, and Elena Satine as Louise Ellis, a wealthy heiress and patient at the local psychiatric hospital.

The season focuses on the revelation that David Clarke is alive and the continued feud between Emily and Victoria, who is now aware of Emily's true identity and is seeking her own revenge.

[3] Season 4 premiered in Ireland on RTÉ2 on January 6, 2015, with a double bill before settling into its regular slot two weeks later,[4] and completed its run on May 19, 2015, with a double bill.