Molly C. Quinn is an American actress known for her work in film, theater, and television. She played the role of Alexis Castle in the ABC series, Castle. Her full name is Molly Caitlyn Quinn, but on the show, she is credited as Molly Quinn until season 6, after which she is credited as Molly C. Quinn. Molly was born in Texarkana, Texas, and started her acting career at the age of six when she appeared in a play called The Nutcracker. The director and producer Martin Beck ,recognized her talent