They’re hiding in plain sight.
Ted Bundy saved a child from drowning.
Yes, that's right, a serial killer actually saved a life. That wasn't even his only upstanding act; Bundy got a commendation from the Seattle Police Department for chasing down a purse thief.
His crimes: Bundy confessed to 30 murders, though authorities suspect there may be more.
State Archives of Florida / en.wikipedia.org
Jeffrey Dahmer pulled so many weird pranks in high school his classmates dubbed it "doing a Dahmer."
In light of his legacy, "doing a Dahmer" probably has a very different meaning now. Makes it hard to enjoy his yearbook signatures.
His crimes: Dahmer murdered 17 people and is suspected to have eaten some of them.
Eugene Garcia / Getty Images
John Wayne Gacy shook hands with former First Lady Rosalynn Carter.
When he wasn't painting terrifying clowns or murdering people, Gacy served as a local precinct captain in the local Democratic party.
His crimes: John Wayne Gacy murdered 33 men aged 14 to 21.
White House photographer / en.wikipedia.org
Dennis Rader worked for ADT Security Services, installing home security alarms.
Rader worked at ADT for a whopping 14 years, while people were unknowingly letting in the very thing they were probably trying to keep out.
His crimes: Known as the "BTK (bind, torture, kill) killer", Rader was convicted of murdering 10 people.
KWCH / youtube.com