I just finished:
Indiana Jones and the Genesis Deluge by Rob MacGregor.
This is the fourth book in the Indiana Jones Bantam novels. It was an alright story, but it seemed to take a while to get to the MacGuffin which was Noah's Ark. The MacGuffin wasn't in there too much though, just got coverage on about four pages at the end.
Now I'm going to start:
Indiana Jones and the Unicorn's Legacy by Rob MacGregor.
This is the fifth book in the Indiana Jones Bantam novels.