Not Quite Right

Working late in a university anatomy lab doesn’t usually bother Alex. The building is quiet, the students are gone, and there are just six cadavers to prepare for the next morning’s practical.
Then one falls from its trolley.
A faulty wheel. An uneven floor. A long day and an exhausted mind. There’s an explanation for everything.
Until it happens again.
And when the cadavers begin turning up where they shouldn’t, Alex starts to wonder whether they are really alone in the building.
After all, dead bodies don’t move.
Do they?