There is more and more evidence that people can really hear the voices of deceased relatives, and this is not such a rare occurrence.
61-year-old Maria-Louise Warne from Devon told British reporters that for many years she has heard the voice of her late mother and that her advice brings her relief.
And according to a survey, about 13% of widows and widowers in Wales hear the voices of their deceased partners.
Ghostly figure hunched over by the bed, whispering in the dark: For most people, this is a nightmarish delusion that could drive them insane if repeated regularly.
But not for Marie-Louise Varne.
A 61-year-old foreign language teacher from Devon finds the visits of her mother, who died 20 years ago, strangely comforting. Indeed, the advice her late mother Irene gave was useful to her as she made the most important decisions of her life.
To a sane person, this may sound like a woman has lost her mind. However, there is growing evidence that such paranormal experiences are common.
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A recent massive survey of widows and widowers in Wales found that 13 percent of them heard or heard the voice of their deceased partner before, while 14 percent of them even saw their ghost.
Some of them, like Marie-Louise Varne, felt their touch on their bodies, and more than one in ten claimed to have had a dialogue with their deceased loved one.
More importantly, those who experience these phenomena report that they cope with the grief of loss much better than those who do not.
Pop singer Celine Dion revealed last year that she still feels the presence of her husband, Rene Angelil, who died of cancer in January 2016. The couple have been married for 22 years and the Canadian singer explained that she still speaks to him and can hear him from time to time.
Celine Dion and Rene Angelil in 2012.
And the widow of Sir Bruce Forsyth, 60-year-old Lady Vilnelia, admitted in an interview with reporters that "she talks to him all the time."
These interactions with the dead - be they visions, voices, or tactile sensations such as taste and smell - are so common that psychologists have a special name for them: experienced continued presence or ECP.
Marie Louise has no doubts that her experience is genuine.
According to Marie-Louise Varne, this is probably due to the last words of her mother, in which she promised to always be by her side.
What does official science say to this? They try to explain this by the games of our brain: after all, all our perception of the world is connected with the brain.
After we have experienced something, our brain subconsciously creates a "pattern" of this event or interaction, and that is why we understand what to expect in ordinary situations.
According to experts, this scheme turns out to be associated with sights, smells, tastes and our brain creates something like hallucinations when something similar appears. And the "connection" with the deceased is also the work of our brain, which reproduces the "scheme" of interactions with them even after a person dies.
This is supposedly why people see or hear ghosts next to a person's favorite chair, his bed or his house in general.
Despite the fact that the ECP phenomenon is quite common, many people are reluctant to talk about their experiences.