However , the journal did not provide a clear motive behind the shooting .
Investigators recovered a 39 - page journal belonging to Houser , which contained the name of the theater and the time and date of the screening of Trainwreck , along with random notes and observations .
The journal did not provide a clear motive behind the shooting .
Investigators recovered a 39 - page journal belonging to Houser , which contained the name of the theater and the time and date of the screening of Trainwreck , along with random notes and observations .