It started at the Zawahri family house on Yorkshire Avenue shortly before noon and ended a mile away in the college library where students were studying for finals.
Officers were dispatched to the house to respond to reports of shots fired. There, they found the 1,000-square-foot home in flames.
Inside, firefighters would later find two bodies in a back room -- those of Zawahri's father, Samir, and his brother Chris.
Both had been shot.
Outside the house, police came across Fine.
She had interrupted the gunman's carjacking, but his rampage was just beginning.
He got into the vehicle and forced Sisk to drive the short distance to Santa Monica College, which Zawahri attended as recently as 2010.
During their ride, 911 calls poured in, keeping police on the gunman's path.
As the car headed toward the campus of the community college, where 30,000 students are registered, he opened fire on a passing bus, slightly wounding three people.
He then got out and shot into a red Ford Explorer, carrying 26-year-old Marcela Franco and her father, 68-year-old Carlos Navarro Franco.
Carlos Franco worked as a groundskeeper at the college. They were on campus to get textbooks for Marcela.
"'Broken' is not a strong enough word to describe us," said relative Margret Quinonez Perez.
'Miraculous' more people weren't hurt
After shooting into the SUV, the gunman abandoned his hijacked vehicle. In a stroke of good luck for the driver, he left her unhurt.
Dressed in black, the gunman then walked the campus, "shooting as he went along," Santa Monica Police Chief Jacqueline Seabrooks said.
Outside the school library, he saw a woman and "executed her," the police chief said.
Her death was the fifth of the rampage.
Authorities identified her Monday as Margarita Gomez. She was a resident of Santa Monica but not a student at the college.
Finally, the gunman walked into the library.
"He attempted to kill several library patrons who were hiding in a safe room. It's miraculous that those individuals were not physically injured," said Seabrooks.
Inside, Priscilla Morales and her friends hid.
"I was so scared and thought literally I was going to die," she said.
By then, the gunman had returned to the main area of the library and was met by three police officers.
"Drop it!" Morales said she heard police say.