Silas Grant was the officer in charge of the Evidence Locker room in 2038.
Grant was stealing equipment, a biometric printer, and robotic parts from the Evidence Locker room to pass onto Glen Dunbar. It was unknown how this relationship first developed. In order to hide his crime, Edward Kennex was implicated as stealing the items instead and selling them on the black market. It was only when Glen Dunbar was finally unveiled as the true Straw Man serial killer that Grant's involvement was uncovered.
Grant was killed in the line of duty three weeks after Edward Kennex was killed in 2038. It was strongly suspected that Dunbar killed Grant to hide the original crimes.