Toby Kebbell
Leslie Krux / Patient 101
Mo Collins
Aidan Wallace
Young Leslie Krux (voice)
Jonathan Bray
U.S. Marshal
Erica Jade Goldsmith
Patient 101's Mother (voice)
Jon Huck
Patient 101's Father (voice)
Theresa June-Tao
Stage Manager (voice)
Megan Ferguson
Bea
Stephen Merchant
T.E.R.R.Y. (voice)
