Hex and Ace can equally complain about war zones, having jumped from 1649 in Ireland to 1917 on the Western Front, in a British field hospital near the eponymous No Man's Land where mysterious things are happening and a murder has been announced. The story turns out not to involve any alien or time-travelling presence other than our regular cast, but does invoke some scientific knowledge which is probably more advanced than what the British really had at the time. There are some potentially interesting thoughts on the horrors of war, but these are weakened by the plot being a bit too clever by half, and by the implausibility of some of the behaviour the characters display. Also The Settling did the horrors of war rather better. ( )