Lovejoy S02 E06 One Born Every Minute

"In the shady world of antiques, Lovejoy has a knack for finding the truth."

Ashley Wilkes travels around East Anglia painting charming pictures of country cottages and seducing their female inhabitants. An army officer hires Lovejoy to find Wilkes, on the pretext of having a commission for him, but Lovejoy smells a rat. When he finally catches up with the elusive painter, it appears that Wilkes has a terrible secret.