Spencer is on a run with her drug counsler dean and shes trying to remember “that night” as shes on a run whomever this is above which in my gut i believe is ezra! Yes ezra. And afterwords spencer does have a flash back the shovels are the exact same she pulled it out of a wheel barrow and ran after whom we think is ali and of course a would want to put the shovel in place to make spencer remember. Hence why i believe ezra is a. This is all over thr place but i think it means something.