Here is the part that will blow people's minds. Islam also believes that Jesus was a prophet and that he will come again also. I believe that Jesus will be the False Prophet. (i.e. False Jesus). Imagine Jesus (False Jesus) returning to earth, doing signs, wonders, and miracle. He will teach the Bible showing how verses point to the 12 Imam/Mahdi as the Messiah and that we mis-understood he was the Messiah, he was just to point the way to the real Messiah (Mahdi). What would deceive the elect more than a False Jesus doing miracles? Try to wrap your head around that one for a while...
I believe that you are right.