Korn’s Jonathan Davis -- Lawyers Slaying Me For Serial Killer Museum Case

Korn frontman Jonathan Davis got a bloody good deal when he wriggled out of a costly lawsuit over a failed serial killer museum, but he forgot to pay the guys who got him that deal ... and now they're suing.

Davis was supposed to open the "American Curiosities Museum" with another investor, but the deal fell apart and Davis got sued twice. His lawyers say they stepped in, in 2006, and helped reach a settlement ... and even gave him a payment plan to settle his legal tab.

The attorneys say he owed $158,407 ... and they agreed to let him pay it down $1,000 a month. However, Davis stopped paying after just 2 months.

Now they're suing for the balance plus interest -- which brings his legal debt to a whopping $256,021.