We missed it- or almost- but it is too good a yarn to ignore, so here is a last minute addition. Grand adventure yarn concerned with the building of a one-man submarine in England -- two men, one of questioned loyalty, two girls, and a scene shifting from a secret Scottish naval base to London to France. Sabotage, spies, adventure, romance, good dialogue, credible characters, rivalry in love. A safe bet-sales-rentals.