Tom has a case of the body switches.
The only new thing this brings to an old trope is the fact that the alien doing the body switching isn’t very competent at it – he gets caught pretty quickly, all things considered. But other than that it’s pretty straightforward. It would’ve been a lot more fun with, say, half the main cast changing bodies with each other.
But it’s ultimately a pretty weak instalment – there’s never much in the way of stakes or suspense. Even what could have been an interesting standoff at the end with ‘we can’t shoot, we might hit Janeway’s body’ is resolved almost as soon as it’s stated.
518 down, 219 to go.