Janet Leigh & Julie Harris in The House on Greenapple Road (1970)

Lt. Dan August (Christopher George) is a conscientious detective in his home town of Santa Luisa, California. When Marion Ord (Leigh) disappears, leaving a bloody crime scene behind her, he must find out what happened. His obstacles include an over zealous and publicity hungry county sheriff (Ed Asner) and a less-than-ethical mayor (Walter Pidgeon), hungry for an arrest at any cost. As the case unravels he discovers Ord's checkered past in the small community - it seems that she had affairs with most of the men she knew. The affairs are told in flashback, giving the impression of a lost woman trying to find herself in men. Harris plays Marion's sister-in-law. Look for Christopher George's soon to be wife, Linda Day and yes, that's Jan Brady (Eve Plumb) as little Margaret Ord.

This made for TV film hasn't been released on DVD, though you can find it in full on YouTube. Part one is above, uploaded by TVTERRORLAND.

Obscurity factor: 9 (not on DVD, on YouTube, largely forgotten)