Authors:

Believe me, it is a great deal better to find cast-iron proof that you're innocent than to languish in a cell hoping that the police---who already think you're guilty---will find it for you.

Douglas Adams (2016). “Dirk Gently's Holistic Detective Agency Box Set: Dirk Gently's Holistic Detective Agency and The Long Dark Tea-Time of the Soul”, p.132, Simon and Schuster
Believe me, it is a great deal better to find cast-iron proof that you're innocent than to languish in a cell hoping that the police---who already think you're guilty---will find it for you.