Benoit Blanc, really required?

Rating: 5/10 (3 January 2020)

First things first, why did Ransom hired Benoit Blanc as a detective if he thought the toxicology results would find positive morphine?
The police would think that only Marta could have access to the morphine (and her finger prints would be on it) and thats it!! No need for a detective like Benoit!