Death in the timeline: crime

2026, Marcus Erinson, a well trained 24 years old cop and a master detective gets shot in the middle of his chest on duty in a street war against the MOB society, Fortunately, he invented the time travel room; ERIKA, which can teleport him across time and space in a hard and painful process, while bleeding, he drives to his house to use ERIKA, he goes back ten years to warn his younger self, he gets to his parents' home, where he lived back then and he dies in their backyard and his 14 years old version finds his corpse...