Shouldn't the team have been suspicious about the kidnapping the minute they saw a finger in the garbage? I was. Removing a digit is usually done to send proof the kidnappers have the victim, no? The faked kidnapping part of the plot was rather weak, imho.
I thought Tony demonstrated a great deal of maturity in this episode. He did not go off into a hissy fit when he realized that he was the last one in the loop regarding Ziva's extracurricular activities and remained staunchly supportive. I'm beginning to think that Ziva doesn't deserve him!