This was a much anticipated first read for my Kindle Fire as the graphics based file did not seem to be easily compatible to my Kindle Keyboard. The artwork is sublime and easily captures likenesses of main cast from both series. Enjoyable as a story so far, it's a shame it's not been released until both halves completed but not a long wait now. A little predictable but only so far as characters behaving typically or doing things you'd expect in crossing over, but it demonstrates in part the author/artists living up to expectations. Would be good for further spin-offs though it's not explained whether the storyline may seek to prevent a future crossover breach in the conclusion. Highly recommended for both Doctor Who and Trek. To IDW, please see if a similar crossover with Daleks and David Tennant can be achieved!!!