In the play “Incognito,” four actors play 21 different roles, without so much as a set change or a new costume. In fact, they never even leave the stage.

Casey Seymour Kim and Tony Estrella in a scene from

The Gamm Theatre in Pawtucket is giving “Incognito,” by British playwright Nick Payne, its New England premiere. The Gamm’s Artistic Director Tony Estrella and actress Casey Seymour Kim join Rhode Island Public Radio’s Elisabeth Harrison in the studio to talk about the play, and what it says about the brain, memory and identity.

Elisabeth Harrison's journalism background includes everything from behind-the-scenes work with the CBS Evening News to freelance documentary production. She joined the WRNI team in 2007 as a Morning Edition...