John is Malcolm Merlyn in 'Arrow' - now showing worldwide.
Megacon: Orlando FL
28-29 May 2016
Awesome Con: Washington DC
4-5 June 2016
11-12 June 2016
An Evening with John Barrowman, Denver 18 June 2016
The new novel about twins Matt and Em Calder by John and his sister Carole E Barrowman will be published on 5 May, followed by a UK-wide signing tour.
Arrow: The CW (US): Weds 8/7c