Mysteries of Dr. John Thorndyke
Early 20th century forensic detective by R. Austin Freeman
S2E4 - Elimination of Mr. Pratt

S2E5 - The Five Pipe Problem

Adapted from the Singing Bone

S2E6 - Spinster's Guest

S3E1 - The Blue Scarab

S3E2 - The Touchstone

S3E3 - The New Jersey Sphinx

S3E4 - The Funereal Pyre

S3E5 - The Stolen Ingots