>> there is a wide range investigation going on into the senator's dealings with his friend, florida eye doctor, questions about alleged health care fraud. dr. melgon was a big contributor to senator menendez. didn't pay for two of the trips until it spilled out into the open. there is a potential question for the ethics committee. a lot to chew on. >> thank you. drew griffin's search for the women in question has been attempts to meet face to face with a shadowy tipster. >> this story is from an anonymous e-mailer who is pushing out the tips. you and your producer got one of these e-mails. >> we got a cryptic e-mail.