When a nobleman is threatened by a family curse on his newly inherited estate, detective Sherlock Holmes is hired to investigate.

In Praise of Love is the first part of a 1973 double-bill play by the English playwright Terence Rattigan (the second half being Before Dawn, a burlesque of the opera Tosca)- it was the penultimate play he wrote and was inspired by the true-life relationship between Rex Harrison and Kay Kendall and follows her illness and death.

There's a murder at the elegant hotel where Miss Marple is staying and international adventurer Bess Sedgwick is the prime suspect.