I've been waiting for what I've lovingly referred to as "the backstory episode" for a while now, and Fragments did not disappoint. I think Chibnall did brilliantly with this one: the explosion was a brilliant way to introduce the backstories.  I loved seeing how everyone got recruited to Torchwood 3, and Owen's story especially made me cry. I feel so bad that he had to go through that, and it really explains a lot about his character. Also, I'm glad John is back even though I hate him. So yeah, this one was a 5/5 for me.