I have come across missing seasons from TV series. For example, Kaleidescape does not offer Season 3 of Jack Ryan even though Season 4 is now available on Amazon Prime. More strangely, Kaleidescape now offers only Series 1 and Series 3 (but not 2 and 4) of The Fall, a well-regarded UK production. Although this may occasionally be the result of expiring license agreements, it discourages one from downloading certain shows since the risk appears real that one will end up with an incomplete set.