★ 2.0
★ 6.7
★ 7.5
★ 6.1
★ 3.3
★ 0.0
★ 6.2
★ 3.7
★ 4.5
★ 6.0
★ 5.2
★ 5.0
★ 6.3
★ 8.0
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.
