Detective McPhail talked to Thomas Joe Hinkley about his discovery of the Izards' bodies.

Detective McPhail interviewed neighbor Lydia Catlett about what she witnessed the day of the Izard murders.

Detective McPhail interviewed neighbor Roland Bland about what he witnessed the day of the Izard murders.

Detective McPhail interviewed the Hawkinses about what they witnessed the day of the Izard murders.

Detective McPhail interviewed neighbor Hannah Waithers about what she witnessed the day of the Izard murders.

Detective McPhail interviewed county school bus driver Elroy Murphy about his conflict with the Izards.

1958 investigators spoke to County Road 106 residents about the Izards and the day of the murders.

Detective McPhail interviewed union organizer Elliot Perch about his relationships with Bowlan Glove employees.

Detective McPhail interviewed Bowlan Glove Factory owner Harold Bowlan after he returned to Oxford.

1958 investigators spoke to many Yoknapatawphans to gather background information on the Izards.

1958 investigators spoke to the people considered the most‑likely suspects in the Izard murders.

1958 investigators were able to clear some potential suspects of involvement.

In 1958, Detective McPhail spoke with the bartender at Sid's Tavern about the comings and goings of multiple suspects and witnesses on the day of the murders.

In 1958, YCSD investigators attempted to verify union organizer Elliot Perch's alibi.

In 1998, Doris Hammack approached the YCSD, saying she had possible new information in the Izard case.

In 1998, Detective Nelson reached out to retired Detective McPhail about the Izard investigation.