Lady of the Dunes: Hunting the Cape Cod Killer

TMDB score: 6.0/10

Examines the decades-long investigation of the murder of an unknown woman found in the dunes of Provincetown, Mass. Her vicious killing haunted and stymied even the most seasoned members of the town's police department, and surprisingly coincided with a man's pursuit to identify his birth mother.

Selected season 1, episode 1.