Watch the full story of the cunning fraudster who posed as an MI6 agent to con his ex-girlfriend out of £800,000.

Conman: The Life and Crimes of Mark Acklom features the first TV interview with Diana Acklom, his mother. In it she has an extraordinary theory for her son’s prolific crimes.

Acklom has lodged an appeal against his jail sentence for duping victim Carolyn Woods in a romance scam.

The documentary was made by Sky's crime correspondent Martin Brunt.

SUBSCRIBE to our YouTube channel for more videos:    / skynews  

Follow us on Twitter:   / skynews   and   / skynewsbreak  

Like us on Facebook:   / skynews  

Follow us on Instagram:   / skynews  

For more content go to http://news.sky.com and download our apps:

Apple https://itunes.apple.com/gb/app/sky-n...

Android https://play.google.com/store/apps/de...