 Why was the ugly man constantly chasing after Gabe?
"You must allow me to pay your cleaning bill," Gabe said, taking out his wallet and extracting several credit notes without seeming to look at them. And that, coming on top of Gabriel Lockard's spectacular appearance, was too much. Gabe Lockard was in no condition to drive the helicar. To the girl's indignation, the stranger not only hauled Gabe out onto the dripping grass first, but stopped and deliberately examined the young man by the light of his minilume, almost as if she weren't there at all. Only when she started to struggle out by herself did he seem to remember her existence. "I have plenty of money, thank you, Mrs. Gabriel Lockard....
 He wanted his body back.
 He was actually after Gabe's wife.  He wanted his body back.  He wanted some of Gabe's money.  He was only following him by coincidence.