by Rex Stout, Dean Koontz
Where there's a will, and also Nero Wolfe, odds are there is also a body or two. It's 1938, and Nero Wolfe is short on money, so he takes a case he'd rather not: three sisters who want him to investigate the writing of a will. Their late brother promised his sisters a million dollars each, a mill...
A cast of thousands. The mystery didn't quite stand out for me, though it amused me to see some particular Wolfe-ian technical knowledge was the basis for resolution.