I totally agree with the other poster. NEMESIS is one of the best of the Christie adaptations with a superlative plot and cast.
The scene involving Liz Fraser as the mother of the murder victim is a study in acting at the finest level. This underrated woman was a fave in Brit films in the 1960s who never got a mainstream break in US films. Check her out as Julie Andrews's friend in the 1964 THE AMERICANIZATION OF EMILY.
All of the perfs in this prod have a chance to shine with and without the peerless Ms. Hickson who was never nommed for an Emmy for her Marple work. Shame on them! And dig the lesbian CID agents! :)