True Crime Chronicles: The US Federal Court sent a Midwest City sicko away for life after a 2015 sex sting in Fort Smith

Jack Lemay Lambeth

In the shadowy corners of the internet, where predators hunt under screen names and false bravado, one man’s twisted fantasy collided with law enforcement’s steel trap. On January 7, 2016, in a federal courtroom in Fort Smith, 58-year-old Jack Lemay Lambeth--a long-haul truck driver from Midwest City, Oklahoma, registered sex offender, and unrepentant child exploiter--heard the words that ended his freedom forever: life in prison without parole, plus an additional ten years tacked on because of his prior record.

No chance of release. No more cross-country hauls. No more victims.

This wasn’t Lambeth’s first encounter with the justice system. His criminal history spanned decades, revealing a dangerous pattern of targeting children. Lambeth’s documented crimes began in Oklahoma. In April 1990, an Oklahoma court convicted him of first-degree rape, five counts of lewd or indecent proposals or acts to a child, and two counts of forcible sodomy.

The victim was a 12-year-old girl in Oklahoma.

He was released from state prison in February 1995 and registered as a Level III sex offender .Years later, federal authorities caught him again. In 2002, Lambeth--then living in Midwest City--was sentenced to 10 years in federal prison after pleading guilty to possession of child pornography.

By 2015, he was still on the sex offender registry. His last verified address before the Arkansas sting was in Richburg, South Carolina, though court documents often listed his Midwest City ties. The open road of a trucking career provided the perfect cover for crossing state lines in search of new targets.

Despite multiple convictions and registrations, the warnings failed to stop him. Lambeth kept logging on and kept hunting. In March 2015, the Fort Smith Police Department’s Street Crimes Unit launched an undercover operation in the Western District of Arkansas as part of the nationwide Project Safe Childhood initiative.

An undercover detective entered an adult chat room called “TheOtherPlace,” posing as a mother openly offering her fictitious 8-year-old son and 9-year-old daughter for sexual exploitation

.Lambeth, using the screen name Jack58mOKC, jumped in quickly. He described himself as a truck driver who “liked young girls.” The chats shifted to private Yahoo Messenger sessions. He pressed for details about the 9-year-old girl’s “experience,” discussed specific sexual acts he wanted to perform on her (and possibly the boy), and chillingly referenced having been “sexually active with a 12-year-old girl” before, echoing his 1990 Oklahoma conviction.

He told the undercover persona: “I’m hoping you are real. Believe me you are a fantasy come true.”

Lambeth didn’t stop at talk. He made detailed plans to travel from Oklahoma (and his recent South Carolina connections) across state lines into Arkansas, specifically to the Fort Smith / Van Buren area. He even mailed two sex toys to a post office box supplied by the detective---items explicitly meant for use on the fictional children.

He mentioned hauling potatoes and confirmed his impending arrival.

On Saturday, March 28, 2015, Lambeth made contact: he was at a local motel and ready to meet. Some reports place the final takedown in the parking lot of a local restaurant in Fort Smith; others note the initial motel contact nearby in the Fort Smith/Van Buren area of Sebastian OR cRAWFORD County.

Either way, Fort Smith police moved in swiftly and arrested the 58-year-old on the spot.He initially faced state charges of two counts of attempted rape in Sebastian County Circuit Court. Federal charges followed quickly: interstate travel with intent to engage in aggravated sexual abuse of a minor (18 U.S.C. § 2241(c)). State charges were dropped in favor of the stronger federal case. In August 2015, Lambeth pleaded guilty.

On January 7, 2016, U.S. District Judge P.K. Holmes III presided over sentencing in Fort Smith. Assistant U.S. Attorney Dustin Roberts presented the evidence: chat logs, shipped sex toys, travel plans, and Lambeth’s full criminal history--including the 1990 Oklahoma rape/sodomy convictions involving the 12-year-old and the later federal child pornography case

.Due to his prior sex offender status, statute required an extra ten years. The base charge already mandated life. Judge Holmes imposed it: life without parole, consecutive to the additional decade.

Acting U.S. Attorney Kenneth Elser highlighted the case as a success in combating online child exploitation. The investigation involved seamless teamwork between Fort Smith Police and the FBI under Project Safe Childhood.

As of 2026, Jack Lemay Lambeth remains incarcerated in the Federal Bureau of Prisons (BOP) system, serving his life sentence at the Tucson Federal Penitentiary with no possibility of release.

Jack Lemay Lambeth will die behind federal prison walls.

No more internet chat rooms. No more motel meetups in places like Fort Smith. No more children endangered by his actions.

His case exemplifies how Project Safe Childhood turns predators’ digital hunting grounds against them. For every offender removed, real children in communities across Oklahoma, Arkansas, and beyond gain a measure of safety.

But the battle continues. As long as men like Lambeth believe a child’s body is available for their “fantasy,” law enforcement will be there—waiting in chat rooms, motels, and courtrooms.

A fantasy come true? For Jack Lambeth, it became the final one that locked him away for life.