You find a note hidden behind the painting. It reads:

Dearest daughter Elsie,
Please do not fret in my absence.
You know that I’ll be home
soon, so please be kind to your
brother and Vera. Remarkably,
I’ll be 3 hours behind you.
That’s right, my time will be
different from yours!

If you stay out of mischief,
perhaps I’ll bring home a
surprise for you.

Your loving father,
Charles