Cast announced for Proof at Menier Chocolate Factory

The cast has been announced for David Auburn's Proof, which opens at Menier Chocolate Factory, an Off West End venue in south London, on 20 March 2013, following previews from 14 March - running to 27 April 2013.

Emma Cunniffe (Claire), Mariah Gale (Catherine), Matthew Marsh (Robert), Jamie Parker (Hal)

It is directed by Polly Findlay, designed by Helen Goddard, lighting by Paul Anderson.

Catherine has cared for her father Robert, a renowned mathematician, through his mental illness for the past five years. His ex-student, Hal, discovers a ground-breaking proof in Robert's office but the question is posed: who is the real author of this brilliant work? Catherine struggles to solve this as well the most perplexing problem of all: how much of her father's madness - or genius - has she inherited?

Mariah Gale London stage credits include Three Sisters (Young Vic), Romeo and Juliet, Hamlet - with David Tennant (RSC), 'Tis Pity She's A Whore (Southwark Playhouse).

Jamie Parker London stage credits include Prince Hal in Henry IV Parts 1 &2 (2010) and Henry V (2012) at the Globe. The original cast of The History Boys at the National Theatre, on Broadway and on film; Rosencrantz and Guildenstern are Dead (Chichester /Theatre Royal Haymarket).

Emma Cunniffe London stage credits include Conquest of the South Pole (Arcola), The Crucible (Regent's Park Open Air Theatre), Dumb Show (Rose, Kingston), Losing Louis (Hampstead and Trafalgar Studios).

Matthew Marsh, has appeared at the National Theatre in The Last of the Haussmans, Blood and Gifts, The Overwhelming (with Out of Joint) and Michael Frayn's Copenhagen, which transferred to the Duchess Theatre. Other theatre includes Glengarry Glen Ross (Apollo), No Naughty Bits and Us and Them (Hampstead), Bingo and A Prayer for My Daughter (Young Vic) and The Exonerated (Riverside).