Convicted killer turned tech whiz confronts his sordid past


              Harel Hershtik speaks with a client on his phone, in Tel Aviv, Israel, Tuesday, May 10, 2022. When he was 20 years old, Harel Hershtik planned and executed a murder. Today, he is the brains behind an Israeli health-tech startup, poised to make millions of dollars with the backing of prominent public figures and deep-pocketed investors. (AP Photo/Ariel Schalit)
            
              Israeli Harel Hershtik, vice president of strategy and technology at Scentech Medical, demonstrates his company's product, which he says  can detect certain diseases by analysing a patient's breath, at the company's office in Rehovet, Israel, May 3, 2022. When he was 20 years old, Hershtik planned and executed a murder, shooting his victim in the head and burying the body in a crime that a quarter of a century later is still widely remembered for its grisly details. Today, he is the brains behind an Israeli health-tech startup with the backing of prominent public figures and deep-pocketed investors. (AP Photo/Tsafrir Abayov)
            
              Harel Hershtik works at his lab in Rehovot, Israel, Wednesday, May 11, 2022. When he was 20 years old, Hershtik planned and executed a murder. Today, he is the brains behind an Israeli health-tech startup, poised to make millions of dollars with the backing of prominent public figures and deep-pocketed investors. (AP Photo/Ariel Schalit)
            
              Harel Hershtik works at his labs in Rehovot, Israel, Wednesday, May 11, 2022. When he was 20 years old, Hershtik planned and executed a murder. Today, he is the brains behind an Israeli health-tech startup, poised to make millions of dollars with the backing of prominent public figures and deep-pocketed investors. (AP Photo/Ariel Schalit)
            
              Harel Hershtik has his electronic monitoring device for convicted and released prisoners on his left leg as he works in his labs in Rehovot, central Israel, Wednesday, May 11, 2022. When he was 20 years old, Hershtik planned and executed a murder. Today, he is the brains behind an Israeli health-tech startup, poised to make millions of dollars with the backing of prominent public figures and deep-pocketed investors. (AP Photo/Ariel Schalit)
            
              Harel Hershtik pose for a photograph at his labs in Rehovot, Israel, Wednesday, May 11, 2022. When he was 20 years old,  Hershtik planned and executed a murder. Today, he is the brains behind an Israeli health-tech startup, poised to make millions of dollars with the backing of prominent public figures and deep-pocketed investors. (AP Photo/Ariel Schalit)