The King of Queens star, 47, lost his wife Michelle MCNamara, a crime writer, suddenly in April this year (16) when she passed away in her sleep aged just 46.

In an emotional post on his Facebook page on Monday (01Aug16), Patton, who has a seven-year-old daughter with Michelle, shared how severely he has struggled with grief after her death.

In the post he described how he felt his grief had been far worse than his experience with depression but thanked friends and strangers for their support and revealed how he had been hard at work on his wife's unfinished book about an unidentified serial killer.

"Michelle MCNamara got yanked off the planet and out of life 102 days ago," he wrote. "She left behind an amazing unfinished book, about a horrific series of murders that everyone - including the retired homicide detectives she worked with - was sure she'd solve.

"The Golden State Killer. She gave him that name, in an article for Los Angeles Magazine. She was going to figure out the real name behind it."

The Golden State Killer, also known as The Original Night Stalker, refers to an unidentified serial killer and rapist linked by DNA evidence to an estimated 50 rapes and 12 murders in California in the 1970s and 1980s.

Describing how he had tried to overcome his grief to continue his wife's work, he continued, "Any spare energy I've managed to summon since April 21st (16) I've put toward finishing Michelle's book.

"With a lot of help from some very amazing people. It will come out. I will let you know. It's all her. We're just taking what's there and letting it tell us how to shape it. It's amazing."

The funnyman also announced that although he was still struggling with his grief, he would begin performing and writing comedy again.

"I'm going to start telling jokes again soon," he added. "And writing. And acting in stuff and making things I like and working with friends on projects and do all the stuff I was always so privileged to get to do before the air caught fire around me and the sun died."