Circusmaster Grayson

Dick Grayson's parents survived. Instead of the fall killing them, they were crippled for the rest of their lives, his mother on crutches and his father in a wheelchair. They had to retire, but their son decided to carry on in their footsteps in the circus and become an acrobat.
What happens when a new troupe with mysterious intentions joins the circus with chaotic repercussions?

I got the idea for this when I realized that no one ever thinks about what would happen if his parents lived.

I may or may not have mostly abandoned this story. I had a plot, but getting there was more effort than it was worth.