Complex sentence: Through the course of the interview, Mike's questions keep getting more and more personal, until it is revealed that Mike suspects Tobi of being his biological father, as indicated by Mike's mother on her deathbed.
Split into simpler sentences: Through the course of the interview, Mike's questions keep getting more and more personal. He finally reveals that he suspects that Tobi is his biological father, as indicated by Mike's mother on her deathbed.