TV
Rex Features
The 75-year-old will play Ruth Van Rydock alongside Julia McKenzie, who took on the role of the famous detective last year.
Collins's appearance in They Do It With Mirrors is reportedly a dream come true.
"It has always been Joan's dream to star in Miss Marple... She is one of the main characters and has some great scenes," a source is quoted as saying.
> Miss Marple based on Christie's granny
More: Joan Collins, TV
Tube Talk
'Freaks and Geeks': Tube Talk GoldTube Talk Gold heads back to the '80s and remembers Freaks and Geeks.
TV Interviews
'Celebrity Apprentice' Debbie Gibson Q&ADebbie Gibson opens up about her Celebrity Apprentice experience.
Reality Bites
Does Simon Cowell have new SuBo?: VideoWatch a clip of Jonathan Antoine, who is tipped for success on BGT.
TV Ratings
Judi Dench draws 4.1m on 'Graham Norton'ITV1 pips BBC One to the highest primetime audience share.
