That's right -- "executed." This presumably earned Newton the undisputed "most kills by a theoretical physicist" championship until the Manhattan Project came along. Since we have no proof that he didn't personally body tackle each and every one of these criminals after a spirited rooftop chase, we have no option but to assume that he did.
"I'll never stop! First law of motion, bitch!"
Newton even had a Moriarty to his Sherlock Holmes: William Chaloner, a genius forger that had acquired an obscene fortune and many influential friends. Chaloner had a degree of untouchability due to his past as a government informant, and as such, he freely challenged Newton. He published pamphlets that advertised his talents, and even once appeared before a House of Commons committee offering his services to reform the corruption at the Mint, thus essentially announcing his plans to take Newton's place. Newton ended up winning their mental chess by spending two whole years building up an ironclad case against Chaloner, freely intimidating his lieutenants' wives and mistresses so that they would give up the criminal mastermind. Then he got his adversary hanged.