“48 Hours,” which airs tonight on CBS at 10 p.m. and streams on Paramount Plus, investigates crime and justice cases nationally.

The episode, called “My Uncle Joe’s Murder,” focuses on the murder of Shymanski and will feature new interviews from the photographer’s family, friends and law enforcement.

The case stems from the tragic events of Labor Day weekend in 2023, when Shymanski was reported missing by family and friends. An investigation led to Holbrook’s indictment on Nov. 20, 2023, by a Calvert County grand jury.

Prosecutors said that Holbrook drove from his home in Mifflin County, to Shymanski’s residence in Calvert County, Md., where he reportedly shot and killed the photographer in his own driveway.

“It’s terrible memories; it’s a nightmare that (we’re) living,” said Shymanski’s younger sister, Mary, who lives in Michigan. “We are reliving the nightmare with the ’48 Hours’ episode, but we are hoping to inspire investigators to continue the case.”

While law enforcement focused on Holbrook and brought him to justice, Shymanski’s family and friends believe questions remain.

Surveillance footage and license plate readers placed Holbrook at the scene around the time a neighbor reported hearing gunshots. Prosecutors say Holbrook then transported Shymanski’s body to Pennsylvania, where gas station footage captured his truck on the night of the murder.

Further video evidence showed Holbrook discarding human remains outside a retail store after purchasing cleaning supplies. Investigators later discovered Shymanski’s burnt remains in the woods behind Holbrook’s home.

A possible motive for the crime remains unclear, though investigators noted that Holbrook had previously been in a relationship with Shymanski’s ex-wife. The two had since separated, with the woman reportedly distancing herself from Holbrook in the months leading up to the murder.

Holbrook was eventually sentenced to life in prison for the 51-year-old Shymanski’s murder.

“We were happy to answer any of their questions,” said Mary Shymanski, who added the reality of her brother’s death has not totally set in.

“Now, we’re going to watch a national show about his murder,” Shymanski added. “They promised us there would be balanced and fair journalism. We are prepare(d) for that. We wanted to do this (be interviewed for the show) to try to bring justice for Joe. We are grateful for all the law enforcement who helped us.”