Lenora Crichlow stars as Stephie, Zelda's (Cristin Milioti) best friend, roommate and work colleague, on the NBC comedy "A to Z."

Crichlow's professional acting career began alongside Billie Piper in the Century Films/BBC drama "Bella and the Boys."

The role that brought her wider acclaim and attention was that of Sugar in the International Emmy Award-winning series "Sugar Rush," which was also BAFTA-nominated. On stage she played Claudine in Michael Attenborough's "Big White Fog" at the Almeida and Delisha in the Royal Court's original production of "93.2 FM."

Crichlow was critically acclaimed for her next role, the portrayal of Annie in the award-winning BBC series "Being Human," as well as for the ITV drama "Collision." She went on to tackle the series lead role of Ali Redcliffe in Carnival Film's "Material Girl" for BBC One.

In 2010, she filmed the comedy pilot "Dapper" for the BBC and also traveled to South Africa to film the documentary "Who Is Nelson Mandela?" for the BBC. A year later, Crichlow played the guest lead as Lily Thomson in the new BBC series "Death in Paradise."

In 2012, she played the lead role of sprinter Shania Edwards in "Fast Girls." She also appeared in the ITV movie adaptation of Ian Rankin's thriller "Doors Open," co-starring Stephen Fry and Dougie Henshall. She completed the year playing the role of Toni in Charlie Brooker's International Emmy-winning series "Black Mirror" for Channel 4.

Last year, Crichlow landed a role in the ABC series "Back in the Game," starring opposite Maggie Lawson and James Caan, and starred in the independent film "Electricity," directed by Bryn Higgins.