<p>Patrick Phelan is an ageing artist who has never made it big but who somehow manages to live on air in a North London suburb.<br><br>When not running art classes for amateurs, Patrick wrestles in the shed at the bottom of his garden with his life's work: a series of visionary canvases of The Seven Seals.<br><br>When his wheeler-dealer son Marty turns up with a commission from a rich client for some copies of paintings by modern masters, Phelan...