The PI has said in several interviews that Bahamian investigators found his card in Daniel's pocket and contacted him. I don't know how that got past Stern, or if it did. I never heard the PI say that Stern contacted him due to the card. Have you heard him say it? Did I miss something? Or, or you just speculating in this regard?
Martino seems to have kept the PI thing private...And I'll bet Howard screamed at Martino for not telling him about the PI.