The Vanishing Triangle Cast

India Mullen plays Lisa Wallace, an investigative journalist in the show.

Allen Leech portrays Detective David Burkely.

Adam Richardson features as Tommy Stephens.

Laoise Sweeney takes on the role of Susan Reynolds.

Fionnuala Murphy appears as Frances Reynolds.

Sarah Carroll plays Mary Burkely.

Philip O'Sullivan is seen as Det. Chief Supt. Gill.

Stephen Hogan portrays Gough.

Brian Moore takes on the role of Mark Bulger.

Jana Mohieden appears as Mandy Clarke.

Carolyn Donnelly plays Sinead Clarke.

Gracen Daly is seen as Laura Doolan.