Postwar Paris is surging back to life, and its citizens are seizing every opportunity to raise a glass or share a delicious meal. But as American ex-pat Tabitha Knight and chef-in-training Julia Child discover, celebrations can quickly go awry when someone has murder in mind . . . The graceful domes of Sacré Coeur, the imposing cathedral of Notre Dame, the breathtaking Tour Eiffel . . . Paris is overflowing with stunning architecture. Yet for...