Agatha Christie's Belgian detective is known as much for his eccentricities as he is for his intellect and case-solving methods. He claims to value psychological evidence more than physical - but that doesn't change the fact that he's cleared up many a daunting case!
Considered by Agatha Christie herself to be her favorite detective, Miss Marple seems like an "elderly old spinster" only interested in gossip - until a murder happens, whereupon she demonstrates her shrewd intelligence and keen investigative mind.
What can be better than two partners solving a case together? Well, how about a husband-and-wife pair solving a case together!