In Agatha Christie’s the murder of Roger Ackroyd, the detective character Poirot is very fundamental in the investigations into the murder of Roger Ackroyd. Poirot comes out strongly in hot pursuit of the murderer across the Indian Island alongside the two police officers: Maine and Thomas Legge. Having ransacked every other suspect, the policemen incriminate Wargrave to be the murderer after getting a note supposedly written by him. The investigation goes and Poirot comes in as the chief detective with Dr. Sheppard as his assistant in finding who killed Roger Ackroyed. Poirot analyzes all the suspects and supports his case that Dr. Sheppard is the Murderer of Rogers Ackroyed.
Poirot uses the ratiocination in his investigations by engaging possible source of information into logical arguments. This is evident where Dr. Sheppard narrates a about a letter supposedly written by Mrs. Ferrars. Dr. Sheppard does elaborate narration of the murder story in a manner that likely suggested he was indeed present during the writing of the letter. This gives Poirot a lead in his subsequent investigations. He also employs gossiping, a vice widely embraced by everyone including Caroline Sheppard, in his search for the killer. The police on the other hand needs evidence to back up their suspicion about a particular case. Through the investigations, Christie prioritizes scientific inquiry by using Poirot’s methods to unveil the killer, Roger Ackroyd.
It is arguable that it is only the findings of an investigation counts but not the manner in which investigations were conducted. However, the time taken to uncover the truth about any murder case is paramount to the attainment of justice because delayed police investigations more often hit a snag. Finally, Poirot’s ways of investigation are practical and similar to those employed by Sherlock Holmes such as forensics.