demente ♪ whoa oh oh oh ♪ llego la fiesta pa' tu boquita toda la noche todito el dia ♪ ♪ vamo' a baÑarnos en la orillita que la marea esta picadita ita ita ♪ ♪ una mordiditatu boquita toda la noche todito el dia ♪ ♪ vamo' a baÑarnos en la orillita que la marea esta picadita ita ita ♪ ♪ [ cheers and applause ] >> thank you very much. thank you. >>> this is "nightline." >> tonight, tragedy or murder? she called 911 saying she was watching her fiance drown. >> my fiance fell in the water. can you please call anybody? >> was she really responsible for a kayaking trip turned deadly. what newly obtained video of the interrogation reveals. >> plus, from olympian to escort. when her olympic dreams fell apart one of the world's fastest runners started chasing a different rush? >> why shouldn't i get paid for sex. >> she takes us inside her double life as a married famous athlete and las vegas escort and road to redempti