Clues and connection :
In Season 1, the episode called Red Tide, is about a man named Jack Tanner. His teenaged daughter was murdered by friends.

Jack Tanner could have been related to Dumar Tanner. Together they sold the Tanner Family Property to Cut Iron Properties Trust, Inc. Jack Tanner is a construction worker. He may have been the one doing the remodel on the property. He would fit Rosalind's description!!!

Rigsbys father was in jail at the same time orville TANNER