The claimed subject matter provides systems and mechanisms that create frame accurate call trees for threads. The system can include devices that determine the thread on which a break point or event halted execution, identifies a location of the event that halted execution, sets break points at multiple locations during a stopping event where stopping events do not typically involve setting or unsetting set break points, and constructs the frame accurate call tree subset for the thread based at least in part on the break point or event that halted execution and information gleaned from an inspection of a call stack associated with the event that halted execution or the break point.