Garrison appeared on the Great White Way in The Man Who Came to Dinner and Assassins. Her off-Broadway credits include The Foreigner, Debbie Does Dallas, Crimes of the Heart, The Last of the Thorntons and The Prisoner's Song.
In Rabbit Hole, Becca Nixon and Howie Corbett Slattery have everything they could want, until a life-shattering accident turns their world upside down, and leaves the couple drifting perilously apart. Becca, who must also cope with the distractions of her reckless sister Izzy Garrison, and their opinionated mother, Nat Daly, takes solace in her unlikely friendship with a neighborhood teenager, Jason Gallagher, who might provide the key to lead her back from the darkest of places.