A “dangerous” woman who uses several aliases is being hunted for the murder of a dad found zip-tied in a shallow grave a month after he went missing, according to police.

Isabelle Rose Johnson, 38, has “been actively evading law enforcement” while wanted for the slaying of Jason Coulthart, a 43-year-old father whose remains were found on a property in Freeport on Florida’s panhandle on June 25, according to the Walton County Sheriff’s Office.

Coulthart was reported missing on May 24 — then found with a zip tie around his neck buried in a shallow grave, which was covered in concrete with a black Cadillac parked over it, according to an arrest report obtained by People magazine.

Isabelle Rose Johnson is wanted for the murder of Jason Coulthart in Florida. Walton County Sheriff's Office, Florida

Johnson is “wanted on an open count of murder” and is thought to be using several aliases while on the run, including Harley, Jessica Elaine Bowman, Jessica Elaine Thrush, Jessica Elaine Thrash, Jessica Dowdy, and possibly Denise, according to police.

“Justice is coming,” the sheriff’s office posted on Facebook after the reward was increased from $6,000 to $11,000 last week.

“Isabelle. Harley. Jessica. Whatever you’re calling yourself now. Turn yourself in. Enough is enough.”

Johnson, a known swindler who should be considered “dangerous,” has ties to Okaloosa and Walton counties in Florida, as well as several areas in Georgia and lower Alabama, the department said.

Johnson goes by multiple aliases and uses sympathy stories to get help from strangers, police said. Walton County Sheriff's Office, Florida

“Johnson is known to move around a lot and often gets people to help her by playing on their sympathy,” the sheriff’s office said. “She may tell stories about going through tough situations, like domestic violence or other personal hardships, to convince people to give her rides, money, or other help.”

Coulthart is the father of a 20-year-old son and grew up in New Jersey. His connection to Johnson was not immediately clear, nor was a motive for his murder.

Five others have already been arrested for accessory to the killing, police said, without elaborating on their connection.

Jason Coulthart (right) was found buried in a shallow grave in Florida. Walton County Sheriff's Office, Florida

Johnson is 5 feet 3 inches tall and weighs about 120 pounds.

She has brown hair and hazel eyes — however, investigators believe she may have recently cut her hair short and dyed it to disguise her identity. 

She is believed to have a floral tattoo on her left hand near her thumb and forefinger, as well as a tattoo on her right ankle.