John is Malcolm Merlyn in 'Arrow' - now showing worldwide.
Awesome Con: Washington DC
4-5 June 2016
11-12 June 2016
Denver Comic Con
18-19 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 was published in the UK on 5 May and is now available from all good bookstores.
Arrow: Sky1 (UK): Weds 8pm