Team 10 investigator Adam Racusin tracks the timeline of events in Sunday's mass shooting -- from when the gunman opened fire to the moments police stopped him.
- Pool party shooter 'distraught' over breakup
- VIDEO: Police officers confront University City apartment shooter
- Witness says shooter appeared 'relaxed'
- Accused gunman was complex resident, had mounting debt
- Timeline of mass shooting at University City apartment complex
- PHOTOS: Mass shooting in University City
- 1 dead, several injured in mass shooting at University City apartment complex