with david jason a the lead and also one of the producer and i expect a lot more than i get when watch this . the first half be pretty good and promise an intriguing finale and but the second part descend into a confused and unconvincing mess where the crew weren not the only one to wonder what be go on . i get the feeling that some rather heavy hand edit have occur and both with the plot and the final production . there be glare anomaly in the story line and the original theory of how the sub have reappear after be miss for forty odd year be completely ignore at the end ( apart from a brief display of mysterious lightning ) .