William Schwab says he kidnapped and sexually assaulted his estranged wife.
It happened about a year ago when Schwab's wife was picking the couples child after a scheduled visit.
She asked him to take them to her mother's house, but took her to a remote area of Bakers Fork in Kanawha County.
Schwab tied her up and held a knife to her throat as he sexually assaulted her.
His wife was able to escape when they stopped at a convenience store.
Schwab is scheduled to be sentenced in January.
He faces up to 35 years in prison.