Bad Machinery by John Allison for May 29, 2018

Leave someone at the entrance holding the end of the ball of string so you can find your way out.

Maybe this has been covered in the comments already, but my assumption at this point is that Calvin and the old lab assistant are the same person.

I’m with Mildred and Lottie. If time travel’s involved, it’s worth risking detention to get at it.

Shauna is already on Mr. Knott’s “watch” list. Does she dare risk now going truant, just to explore the time hole? Maybe she can convince him it should be allowed, as a history field trip!

They’re time traveling. Why not come back at the instant that they left?

The Campaign for Real Time will not stand for this.

They had better hope that theTime Lords don’t get involved in this.

“Come toward The Light, Che…uh…Mildred!”

Lottie’s comment in the final panel has John Coltrane’s “A Love Supreme” playing in my head, with “weed” substituted for “love”:

A weed supreme a weed suprme a weed supreme …