They just want answers.

Logan Schiendelman’s family hopes an Investigation Discovery television program can help. In May of 2016, the 19-year-old from Tumwater disappeared.

Drivers spotted his car abandoned on I-5 with his wallet, cash, food, and his cell phone. Investigators don’t have any evidence of foul play, but consider the missing person’s case suspicious.

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“This case bothers me, big time,” said Thurston County Detective Frank Frawley, who said he doesn’t know if Schiendelman is alive or dead.

Frawley said suicide is also a possibility.

“It’s what keeps me up at night,” said Frawley.

Schiendelman was going through personal struggles when he disappeared, said Frawley and family members. The 19-year-old who graduated from Tumwater High School ended up dropping out of Washington State University the next year.

When he came home he started smoking marijuana more often, relatives said. Not knowing what happened bothers his loved ones.

“When you get up in the morning, Logan is missing. And the same at night,” said Schiendelman’s great-uncle Mike Ware.

Ware said he hopes the new episode of “Disappeared” will prompt someone to come forward.

Schiendelman’s great-aunt, Tina Crary, connected with Schiendelman about a year before his disappearance.

“You feel cheated. You worry every day,” said Crary.

The Thurston County Sheriff’s Office wants to speak with anyone who knows anything about the disappearance.

The Investigation Discovery program can be seen here.