A man is accused by a fortune teller of being guilty of a series of crimes, which have not yet been committed; and what seemed like a bad joke turns into a nightmare when the police arrive looking for him, considering him the main suspect in a murder. Now he must flee to prove his innocence, before another death occurs.

I wish there was an 'edit' button. (Because I am more of a re-writer than a writer)
Here is what I probably should have written.

“When he's accused by a fortune-teller of a murder he's yet to commit, a mild-mannered accountant must prove his innocence when the murder occurs and he's the prime suspect.”

Hola! Buena observación!

Hi Oscuro,

I feel this would benefit by bring fully into present tense.. i.e fleeing to prove his innocence before another death occurs.

Hola Richiev, gracias por tu lectura! veo 2 ausencias: 1) el descreimiento del contador cuando recibe el vaticinio, que me parece importante porque plantea una visión vital, y 2) que es una serie de asesinatos, lo que significa que otro crimen va a cometerse.

"When he is accused by a fortune-teller of a murder he has not yet committed, a mild-mannered accountant must prove his innocence when the murder actually occurs and he becomes the main suspect by the authorities."