Pocket, Richmond Hill, 1970.  ISBN 0-671-77250-3.  MMPB, 277 pages.  Worn warps show edge and cover wear, creases, some colour loss, small tears and small losses at lower spine end, a bit of soil.  Binding sound with a roll.  Flat Signed by author on half-title page; remainder of interior clean and unmarked with tanned pages; black & white map at front.  ‘“The Sin Sniper” is, suspense – death – and life, set in the Jarvis, Dundas Street area of Toronto, known as Moss Park.’ (from rear wrap).  Detective Inspector Walter McDumont of the Metropolitan Toronto Police homicide squad investigates the murders of young women in the area.