Differences Between Who Solves the Mystery?

To answer your question, I think that a mystery being solved by a detective is more suspenseful than that of one being solved by a psychiatrist. The reason I say this is that the detective is willing to embark on journeys and be put in dangerous situations in order to track down the culprit. On the other hand, the psychiatrist is more likely to analyze the situation thoroughly before doing anything. He/she tries to think about what the culprit would do and what motivates him/her to commit the crimes accused of; ultimately, the psychiatrist analyzes the human mind. For example, Detective Lord Peter Wimsey (Gaudy Night) comes to Shrewsbury College when Harriet calls, risking his life in the process, in order to speak to the suspects and look at the evidence in hopes of finding the culprit. Similarly, Detective Reed (In the Last Analysis) brings evidence to Kate, who then analyzes it (because of her knowledge of psychoanalysis, from her friend Emanuel) and interviews people. It’s ultimately her thinking in the end that leads them to solving the mystery.

If anybody has any other ideas about this, they would be greatly appreciated!