We may want to add a note about seasons on here. Amazon has Season One ending with Adam Ruins Death. My understanding is that some network will order a 13 shows (or so) to test a series. Then they will order more and call it the second half of the first season, even though there's been a significant break. Unfortunately, places selling the show (Amazon Video, in this case) will list these as two different seasons, causing confusion.

Frankly, the narrative arc ending with Adam Ruins Death makes it feel like a full season, but it's the network who gets to decide how these are packaged.