911 calls detail Slender Man attacker’s escape from Madison group home

Morgan Geyser appears in a Waukesha County courtroom, Jan. 9, 2025, in Waukesha, Wis. (AP Photo/Morry Gash, File)

MADISON, Wisconsin (WISN) - New 911 calls and police reports detail the group-home escape of Morgan Geyser, the woman known for stabbing a classmate, nearly to death, to appease the internet character Slender Man.

12 News Investigates obtained calls that detail the group-home escape of Geyser in November 2025. Dane County 911 released 14 videos to 12 News through a public records request. The calls are from the group home and others who claim to know or have seen Geyser.

Geyser was placed in a group home in Madison after being conditionally released from a mental facility in the summer of 2025.

On Nov. 22, Madison police said she cut off her ankle monitor and left the home. Police photos, 12 News Investigates obtained through public records, show the monitor in her bed at the group home with the scissors nearby.

About 24 hours after the escape, police found her in Posen, Illinois, sleeping outside a gas station with a 43-year-old friend named Chad Mecca. “I’m calling about one of my residents. She left last night and took off her GPS monitor,” said the woman calling, who appears to run the group home where Geyser was staying. The woman tells dispatch that Geyser was last seen around 8:15 p.m. or 8:30 p.m. when she was given her medication.

Dane County Dispatch redacted the woman’s name in the call.

“So, last night around 11:30, the ankle monitor team called me and said that, you know, they want to check because there was some activities going on, on the monitor,” she said. “Then we found out that she left out of the window of her bedroom. Cut the monitor.”

“What is her first and last name?” The dispatcher later asks.

“Morgan Geyser,” the group-home leader responds.

“She has a friend that used to come almost every single day that didn’t come,” she said. “We think that he was also part of the thing that she was doing. He is from the church. She’s probably with him because he didn’t come today.”

“An officer will be dispatched as soon as possible,” the dispatcher responds, and then the two hang up.

Five callers claim to know who Geyser is with, and all seem to describe the same person. While the Dane County Dispatch Center redacted the names of who the callers are and who they’re talking about, all describe a person transitioning, who Geyser met at church. Police records point to that person being Mecca

“He’s a man transitioning to be a woman,” said a person claiming to be a friend of Geysers who met her while at Winnebago Mental Health Institute. “So, he’s got this long blonde hair and wears makeup, but it’s actually a man. Morgan befriends people on the fringes of society, that’s just who she is.”

“I’m really hoping it’s not, to be honest,” said another person. “My ex-boyfriend, who s a trans woman, I know has been hanging out with Morgan.”

“I am a church member where Morgan goes, and I said I may have contact information for Morgan’s friends,” another caller states.

Others, claim they saw Geyser.

“A woman just walked by my house who looks like the one in the surveillance photo, but I’m not sure,” said a person who lived down the street from the group home where she escaped.

“I mean every agency in Dane County is working on this right now,” a dispatcher says to another woman.

“This is wild,” the woman responds.

Madison Police interviewed Chad Mecca on Dec. 3 over the phone. A police report says Mecca told MPD they met at a local church in September, traded numbers and became friends.

Geyser, per the report, told Mecca to google “Slenderman Waukesha 2014” and Mecca understood she was charged for the crime.

“Geyser asked Mecca, ‘do you hate me?’ To which Mecca replied, ‘no,’ the report states, saying Mecca would continue to be friends with Geyser.

“Mecca said his visitation was approved by Geyser’s group home,” the report states. “Mecca said their relationship with geyser was not sexual in nature, but that it was a plutonic relationship. The two of them hung out almost every day.”

Geyser said she would live the group home, Mecca told police in the report, and that Geyser would leave with or without Mecca.

“Mecca attempted to tell Geyser that Geyser was being irrational, but Geyser was not listening to any sort of reasoning. Mecca did not want Geyser to be alone, so Mecca chose to go with Geyser. Mecca said that Mecca did help Geyser escape, or come up with the plan. Only admitting that Mecca personally screwed up,” the report states.

Mecca said Geyser cut off her own bracelet and Mecca met her at a nearby park.

“Mecca then said the two of them made their way to downtown by bus, to eventually purchase bus tickets to Chicago–departing on the 1:30 a.m. bus from Lake Street, Madison,” the report states.

By James Stratton.