Asimov - Robots of Dawn

The more famous "I, Robot" has overshadowed this other Robot yarn.  This is also a who dunnit but this time it is not the Roboticist that is killed, it is the Robot.  How can a Robot be murdered you ask? This is defined in the book and there are way too many words used to get to the conclusion when actions could have spoken a 1000 words.  There is another story before this called "Caves of Steel" so I have read them out of order.  But that one was not on the shelf.