Isaac Asimov's robots and aliens. Vol. 3 - Bruce Bethke

In 'Maverick', Derec should be able to control the network of robotic cities, but the cities are not working as they should, and they are becoming dangerous. Somebody else is tampering with them - Dr. Janet Anastasi. Unwittingly, her interference is about to start a war between humans and aliens! In 'Humanity', Derec's quest for identity has led him across the galaxy to slowly rebuild the pieces of his life. Now he must deal with three robots that have no fixed shape, no clear sense of what is a human and what is not. They are his mother's creations, but do her robots spell doom - or salvation?