Some mystery writers suffer from making their detective characters too inhumanly clever, with flawless and logical reasoning.
Asimov never made that mistake. He really just had Elijah Baley go in front of the chief of police, point at his android partner, and say “This man is no robot! He faked his own murder and is now pretending to be a robot! I know this because I peeped on him in the bathroom and his penis was incredibly lifelike. No one would give a robot such a realistic penis!” and then has a panic attack and passes out when he finds out that the genitals he’d been ogling were not, in fact, genuine human flesh and his robot partner is made entirely of metal.
