Residents of Ipswich believe a cat serial killer is responsible for nearly 200 cats disappearing in the last eight months.
Some cats have been returned with evidence of torture, such as missing chunks of fur and burns, but most cats do not come home at all.
The Facebook group was set up by Ipswich resident Deni Parkes and now has nearly 2500 members.
So far the police have not been able to offer any insight into what could be causing so many cats to disappear.
BuzzFeed have reached out for an update on the investigation.