Dennis Auerswald is accused of poisoning his wife, Maureen Kay, in February of 2009.
Detectives believe the 60-year-old man slipped antifreeze into his wife's food or drink over an extended period of time.
Police say when Dennis found his wife passed out at home with what he said was a bottle of vodka, he didn't call 911. Instead, he waited for two hours before bringing her to Medina General Hospital. She died the next day.
A doctor says he found antifreeze in Maureen and a search warrant discovered antifreeze in their garage.
The couple had been married for 14 years.