This should have been the first episode shown, not the third, as the cast and sets were different from the first two episodes and all that followed. Spock's appearance character was also different. This was not surprising since it a pilot, the second one. Nevertheless, this was an exciting installment, allowing for the fact that ESP, which was taken seriously back in 1965, has been debunked via numerous studies. My only complaint were the pant suits on the female cast members. Just imagine the gorgeous and leggy Sally Kellerman and Andrea Dromm wearing those ultra short skirts that Uhuru, Nurse Chapel, Yeoman Rand and all other women crew members had to wear!