There are, the hit man said, many ways to kill.

A string tied between two sticks strangles with a tug of the wrists. A butcher’s blade, long and thin, slices into the heart.

Edgar Matobato said he fed a man to a crocodile, but only once. Mostly, he said, he ended people’s lives with a trusted weapon: his .45-caliber Colt M1911 pistol.

“For almost 24 years, I killed and disposed of many bodies,” Mr. Matobato said of his time with a death squad in Davao City, in the southern Philippines. “I am trying to remember, but I cannot remember everyone.”

“I’m sorry,” he added.

We were sitting in the outdoor kitchen of Mr. Matobato’s secret refuge in the Philippines. A fierce rain sent water skittering into the room. Mosquitoes followed. He slapped one dead, its body oozing someone else’s blood.

Mr. Matobato was in hiding. He has been for a decade, ever since he confessed to his crimes and divulged who ordered the bloodletting: Rodrigo Duterte, the mayor of Davao City, who later became president of the Philippines.