There are a number of inheritors to a fortune who are getting killed by a mysterious somebody whom we do not see. Each death is novel, but not terribly graphic. Who did it?
2017
2020
2004
2009
1980
2022
2002
2001
1995
1997
1991
2006
1946
1973
1944
2007
1975
1969
2003
1967
