Running for 12 years, the crime-solving mystery series featured one of the first major female television detectives in Lansbury’s character Jessica Fletcher.
The 91-year-old even received a damehood for her groundbreaking success in the industry, before her TV series ended after 164 episodes in 1996.
The Bedknobs and Broomsticks star revealed the struggles she faced by leaving behind such a monumental part of her career.
“I was in genuine tears doing my last scene,” she told The Sunday Post. “Jessica Fletcher has become so much a part of my life, it was difficult to come to terms with it being all over.
“Having said that, there have been some two-hour specials since we stopped in 1996 and I wouldn’t be surprised if we got together just one more time,” she teased.
The specials Lansbury referred to were the BBC programme’s four subsequent two-hour TV movies, which sent the author and detective across the world.
The actress went on to admit how little she’d expected from the series, saying: ”I was amazed at how successful it was. I never believed it would run for 12 years.
“I would not want to take anything away from Murder, She Wrote but when you are the principal in something like that you have to work incredibly hard to help keep it fresh,” she added.
The Dame is due to be honoured with the prestigious Rose d’Or award for lifetime achievement on September 19.
She will receive the 56th prize at a ceremony in Berlin, organised by the European Broadcasting Union, and will be joining previous recipients such as John Cleese and Stephen Fry.