Yet another speculation on the fate of the Romanov royalty in 1917 Ekaterinburg, and, as with every new variant, Lord Willis suggests a different set of survivors. Willis' hero, James Tremayne, is ordered by Lloyd George to save George V's cousin, Tsar Nicky, so Tremayne invades Siberia all but alone. Evading bandits and romantic spies, he links up with some impassioned White Russians--the sort who pull grenade pins and then hold on while pausing to make a tsarist point--and a stock American trouble-shooter (to handle the rough stuff). Not quite believably, they get across the Trans-Siberia in record time to rescue cousin Nicky from the Reds--with intermissions for contending with a stray English governess, a vicious rape, and a hike through impassable swamps. Lively and relatively classy, like Willis' previous thrillers, but aficionados will probably find it a bit too predictable and farfetched for thoroughgoing pleasure.