Clarence Hill was born in 1911 in the United States. He led a seemingly ordinary life as a Sunday school teacher and father of two. However, beneath this facade, Hill harbored a dark side that would later manifest in a series of brutal crimes. In 1943, he was drafted into the U.S. Army and stationed at Fort Dix, New Jersey.

Between 1938 and 1942, Clarence Hill targeted couples parked in secluded lovers' lanes around Duck Island, New Jersey. His attacks were characterized by sudden ambushes using a 12-gauge shotgun, often resulting in the death of one or both individuals.
On November 8,1938, Vincenzo "Jim" Tonzillo (20) and Mary Myatovich (16) were attacked while parked on Duck Island. Tonzillo was shot dead after refusing Hill's demand for money. Myatovich was shot, raped, and left for dead. She managed to provide a description of the attacker before succumbing to her injuries the following day.
Frank J. Kasper (28) and Katherine Werner (36) were found dead on Duck Island on October 1, 1939. Kasper was shot in the head and neck, while Werner was beaten to death as she attempted to flee. Their extramarital affair added complexity to the investigation.
On, November 16, 1940, Ludovicum J. Kovacs (35) and Caroline Moriconi (27) were discovered in their car in a wooded area off Cypress Lane in Hamilton Township. Both were killed by shotgun blasts, consistent with Hill's previous attacks.

The final known attack occurred on March 7, 1942, near Morrisville, Pennsylvania, when John Testa (25) and Antoinette Marcantonio (21) were robbed and assaulted. They managed to escape, providing crucial evidence that led to Hill's arrest.

Hill was apprehended on December 29, 1943, at an Army camp in Moultrieville, South Carolina. A shotgun with a serial number matching the weapon used in the attacks was found in his possession. Despite claiming his confession was coerced, Hill was convicted on December 29, 1944, of six counts of first-degree murder and sentenced to life imprisonment.

After serving 19 years, Hill was released on medical parole in 1964 due to throat cancer. He died on July 9, 1973.