Warning: Full spoilers for the episode follow... "You're reaching out for meaning, but the wrong thing is reaching back." What initially appeared to be a "case of the week" installment (albeit a very fun, intriguing one that aimed to get Finch back on his feet) took a very cool and powerful turn in the middle when our heroes discovered that Samaritan itself was behind the super-genius city-wide scavenger hunt that young, lost Claire - a number - was participating in. I usually don't expect all that much from episodes this early in the season so "Nautilus" was a welcome surprise from a mythology standpoint.