1) Case solvers 2) Case workers 3) Clue interpreters 4) Detectives 5) Experts with clues 6) Follows a clue 7) Gumshoes 8) Hammer and spade 9) Holmes and Chan 10) Holmes and chan, for two 11) Holmes and Moto 12) Holmes and Watson 13) Holmes, Columbo and Moto 14) Investigators 15) Marlowe and Queen 16) Miss Marple and Mike Hammer 1) Tecs