We know the start and end location of the incident, and the time range in terms of start and finish times of incident. According to the suspect, when she arrived at the end location she had a head injury (this can be verified with blood evidence in the trunk).
What we know:
- incident timeline: 7:45PM t0 8:28PM
- incident locations: 1900 blk 385 ave, and just off Highway 21 on 460th Ave
- 69% abduction murder victims are deceased in less than 1 hour
- incident time for Mollie: 43 minutes
- travel time between locations: 15-18 minutes
- suspect's time to assault Mollie excluding travel time: 25 minutes
Given the information that we know, the timeline does not allow for a third location, and indeed we know that police are not searching a third location. We do know that the suspect's home was searched, but that does not mean that investigators believe that Mollie was at the dairy farm. According to the information that has been released by police, there are two locations: 385 Ave, and 460 Ave.
Why, without any related facts from police, would we introduce a third location to the timeline where Mollie allegedly received sharp object injuries?
According to the suspect the only injury Mollie suffered at the time he arrived just off Highway 21 on 460th Ave is a head injury. Granted he is most likely lying in much of his statement, but blood evidence should easily identify Mollie's injuries when she was in the trunk.
He may have memory failure between abduction and body location, but according to the suspect, she had one injury at the time his memory recovered. She was found with multiple sharp object injuries, so those must have occurred after his memory recovered.