Murders and Cupcakes. Grandma's Dangerous Game (set of 2 books)

Murders and Cupcakes. Detective Agency “Charity Shop” (#1)
Fiona, Sue and Daisy – three charming retired ladies who work in a small charity shop. One day, the calm rhythm of their lives with coffee Tuesdays and strolls through the lovely streets... of Southbourne is disrupted by the brutal murder of their beloved client Sarah Brown.
Refusing to put up with such injustice, they decide to take the investigation into their own hands. Moreover, a new body appears, and the police are unable to make any progress. Armed with their knowledge of detective stories and, of course, tea with exquisite cupcakes, the three sweet old ladies embark on active endeavors. Thus, the Detective Agency “Charity Shop” is born.

Grandma's Dangerous Game. A Guide to Solving Your Own Murder
Old Good England, 1965. A fairground fortune-teller predicts a horrifying future for sixteen-year-old Frances Adams: one day she will be murdered… Since then, she dedicates her entire life to investigating the murder that has yet to occur. No one took Frances's fears seriously until, sixty years later, her corpse is found in the library.
Present Day. Annie Adams is invited to Gravesdown Hall - the vast country estate of her eccentric cousin Frances. But when the girl arrives in the quirky village of Castle Noll, the old lady is already dead. And according to the terms of the will, all her huge fortune, as well as the estate, will go to whoever solves this murder. The investigation is complicated by Frances's habit of gathering compromising material on everyone. It seems that every charming and quirky local resident had a motive to kill her.
Together with another heir, Annie finds herself embroiled in a dangerously risky game. And the closer they get to the solution, the more fears arise that instead of Gravesdown Hall, she will inherit the sad fate of her grandmother…