Once a murderer always a murderer.

This is what it seems like, at least, when it comes to David on The Young and the Restless.

"If David killed once, he will kill again," Doug Davidson (pictured) said to Soap Opera Weekly.

Will Paul manage to keep Nikki from sipping David's morphine cocktail this week on The Young and the Restless? Guess we'll have to tune in and find out!

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.