Phew! That was close!
Just one more stop. We need to pick up a copy of "The Organ-izer." It's a guide to dealing with human organs. All embalmers need to know it.
To get it, all we need to do is confront the real embalmer who's holding Joe and Sam captive, make him give us "The Organ-izer," and then convince him we're the new replacement embalmers by properly embalming a body.
Then, having done that, we'll send him on his way, untie Joe and Sam, and use The Book to head back home.
Boy, I'm glad I ate a good breakfast this morning!