Detective Ellery Queen has to solve a series of murders where the victims were killed in numerically descending ages, the male victims were strangled with blue cords and the female victims with pink ones.
1994
1983
1998
1987
1995
2000
2004
2001
1982
1979
1955
1929
1950
2003
1947
2002
1954
2005
1972
