RB's diaries say the relatives first went to the police after 24 hours. Not being convinced by Jeremy's story.
This refutes the suggestion they know he's innocent and suddenly decided to attempt a frame up weeks later. Because they were greedy.
Think you miss the point Adam, most members who query the involvement of the relatives believe they may very well have believed/convinced themselves that Jeremy was the murderer for various reasons. It is true we can subconsciously convince ourselves of anything if we want to without realising we're doing it, an argument the guilters on here sometimes use against the innocents and vice versa

Fact is just because they believed he was guilty doesn't mean he was/is, it was only their take on the situation.
