it would on weather his book was consitant with his statements i dont think hed have any reason to lie in ethere years later he could of got a couple of things wrong.
He only gave a couple of statements and they are consistent. His suspicions about Jeremy develope over time. At first he believes Sheila guilty but after the twins funeral, Jeremy's haste to sell everything, his trying to sell the photographs and just his general attitude set off warning bells in Colin.