EXCLUSIVE: New York Times bestselling author Neil Gaiman (The Sandman) is the newest addition to the cast of the dark comedy Nandor Fodor and The Talking Mongoose, which Adam Sigal is directing from his own script. He joins an ensemble led by Simon Pegg, which also features Minnie Driver and Christopher Lloyd.

The film based on true events follows Nandor Fodor (Pegg) — the British-American psychoanalyst, known as the father of parapsychology— on his search to discover the real Talking Mongoose, “Gef.” Gaiman will voice the film’s talking mongoose, with Driver playing Fodor’s assistant Anne who journeys with him into uncharted territory, as previously announced. Actors rounding out the cast are Tim Downie, Ruth Connell, Paul Kaye, Gary Beadle and Drew Moerlin.