Looking for book

Please help, I'm trying to identify a book I read in the 90's. Here's
what information I do have.

It's a sci-fi based on earth in the near future.
Main character is a travelling magician who travels around the solar
system.
His wife is killed by a soldier who goes psycho, while on parade, with
a laser gun.
Soldier sent to a satellite prison.
Cause of mental state, is due to unintentional telepathic connection
with very powerful alien entity
The magician goes to the prison, soldier escapes, gets to magician,
apologies and dies.