Caution: Region 1 DVD - may not play on all UK DVD players. "Rumpled, raincoat-wearing, cigar-chomping Lt. Columbo (Peter Falk) continues to play clever mind games with criminals who mistakenly believe they've committed the proverbial "perfect murder" as Columbo enters its second season. This year the series, one of several rotating programs of the detective anthology NBC Mystery Movie, offers eight episodes of varying lengths (90 to 120 minutes) for the entertainment of Columbo's ever-growing list of fans and devotees. John Cassavetes and Blythe Danner guest star in the opener, "Etude in Black," wherein Columbo matches wits with a symphony conductor who has murdered his mistress; this episode was written by no less than Steven Bochco. "The Greenhouse Jungle" stars Ray Milland and Bradford Dillman as a larcenous uncle and nephew who plan to raise a huge amount of money with an elaborate kidnap scam which inevitably segues into murder. Robert Culp, "special guest killer" in the first-se