K'S FIRST CASE by VICTOR MENDOZA

Sir Michael Gray has died and five people can be the murderers: his wife, Lady Elizabeth Gray, his friend, Colonel Fawcett, his secretary, Miss Everett, Lady Elizabeth's brother and the housekeeper, Nancy flack.

Detective Katrina Kirby (K), must try to solve the problem. She has some theories and knows that sir Michael didn't commit suicide. K interrogated the five people who were in the house when Sir Michael died.

Lady Elizabeth tells K that they quarrelled a lot for the secretary. Colonel Fawcett tells her that he was fighting with Sir Michael for money, but that he didn't murder him.

Lady Elizabeth's brother explains to K that he didn't like him but that he didn't murder him.

Finally, K talks to the housekeeper and to Miss Everett.

They all say the same thing, that they haven't murdered sir Michael.

K discovers a mechanism in the refrigerator from the study where sir Michael's body appeared and talks to the five again.

Finally, the housekeeper confesses that she was the murderer putting a mechanism inside the refrigerator that went straight to the heart of the person, but she didn't really want to murder Sir Michael, she wanted to murder his secretary, because she hated lady Elizabeth. The night of the murder the secretary didn't go to the study and that's why she didn't die.

K has solved the problem.