According to the Swain guide:
Grim-Ace Face is 35 feet right of Shockleys
Hi Coroner! starts about 35 feet right of Grim-Ace Face. Start just left of High Corner below a short, yellow dihedral. Climb the steep, clean handcrack in the dihedral past a difficult exit move to the base of the chimney and the belay (40 feet).
High Corner is 80 feet right of Shockleys and just right of Hi Coroner! (No Belle Prize starts as for High Corner).