Connecticut Serial Killers
ColdCaseIndex documents 3 serial killers whose murders took place in Connecticut, with first known killings from 1914 to 1974. 3 of them were caught; 0 linked case files document their victims. The earliest series is Amy Archer-Gilligan (1914) and the most recent is Paul John Knowles (1974). Profiles are added in order of public interest, so this page is not a complete census of the state.
All 3 profiles
Amy Archer-Gilligan
Amy E. Archer Gilligan
Died (other). Amy Archer-Gilligan, who ran a home for elderly people in Windsor, Connecticut, was convicted of poisoning resident Franklin Andrews with arsenic in 1914.
Carl Panzram
Charles Panzram
Executed 1930. Carl Panzram, a career burglar, confessed in 1928 to 21 murders in several states and abroad; he was convicted of only one, the 1929 killing of a Leavenworth prison foreman, and was hanged in Kansas.
Paul John Knowles
The Casanova Killer
Killed. Paul John Knowles, the Casanova Killer, was linked to at least 18 killings across several states in 1974 after escaping a Jacksonville jail.
At a glance
| Name | Alias | State | Active | Convicted | Confessed | Suspected | Legal status | Fate |
|---|---|---|---|---|---|---|---|---|
| Amy Archer-Gilligan | Amy E. Archer Gilligan | Connecticut | 1914 | 1 | — | 5 to 24 | Convicted | Died (other) |
| Carl Panzram | Charles Panzram | Kansas, Pennsylvania, Massachusetts, New York, Connecticut | 1920 to 1929 | 1 | 21 | 5 corroborated by investigators; Panzram also claimed killings in Portuguese Angola | Convicted | Executed |
| Paul John Knowles | The Casanova Killer | Florida, Georgia, Ohio, Nevada, Texas, Connecticut, Virginia | 1974 | — | — | 18 to 35 | Died before trial | Killed |