I give it 4-stars for the scenery, setting, costumes and eccentric characters but the mystery portion barely ranks above a 1.
The moment you pick up on the detail of the missing red paint; and then notice the first scene that it could possibly reappear; you have your killers: their clear motive and another hour of watching until your suspicions are confirmed.
I wish they would have included more red herrings to keep me guessing until the end.
Murder on the Orient express is a much better movie.
I do love the ending though in the jazz club. I always love seeing characters shed their mask and embrace change.