There are at least six books by Peter J. Heck featuring Mark Twain dealing with various mysteries, including the two already mentioned. *Mark Twain* 1. Death on the Mississippi<http://www.fantasticfiction.co.uk/h/peter-j-heck/death-on-missis sippi.htm>( 1995 <http://www.fantasticfiction.co.uk/years/1995.htm>) 2. A Connecticut Yankee in Criminal Court<http://www.fantasticfiction.co.uk/h/peter-j-heck/connecticut-yankee-in -criminal-court.htm>( 1996 <http://www.fantasticfiction.co.uk/years/1996.htm>) 3. The Prince and the Prosecutor<http://www.fantasticfiction.co.uk/h/peter-j-heck/prince-and-prose cutor.htm>( 1997 <http://www.fantasticfiction.co.uk/years/1997.htm>) 4. The Guilty Abroad<http://www.fantasticfiction.co.uk/h/peter-j-heck/guilty-abroad.htm>( 1999 <http://www.fantasticfiction.co.uk/years/1999.htm>) 5. The Mysterious Strangler<http://www.fantasticfiction.co.uk/h/peter-j-heck/mysterious-strang ler.htm>( 2000 <http://www.fantasticfiction.co.uk/years/2000.htm>) 6. Tom's Lawyer<http://www.fantasticfiction.co.uk/h/peter-j-heck/toms-lawyer.htm>( 2001 <http://www.fantasticfiction.co.uk/years/2001.htm>) I'm reading the third one right now and find myself wishing it were shorter. Arianne Laidlaw