Complex sentence: Bowden finds a set of tools that Tony had brought in and suspects he might be responsible for the elevator damage, but determines that Ben might have more motive having been possibly hired to kill Sarah by her husband to keep her from leaving him broke.
Split into simpler sentences: Bowden finds a set of tools that Tony had brought in and suspects he might be responsible for the elevator damage. However, he wonders if Ben might have been possibly hired to kill Sarah by her husband to keep her from leaving him broke.