A fairly typical Hong Kong potboiler of its day, "Dragon in Jail" combines heart-rending melodrama with sudden eruptions of choreographed violence, all of which serves to underline the bonds of friendship which unite the leading characters. Ho acquits himself admirably here, playing a fairly cliched role, whilst top-billed Lau coasts through proceedings on the strength of his good looks and sensitive acting style, showing no signs of the heavy workload which saw him appear in more than a dozen movies in 1990 (his commercial success meant that he was a popular choice for get-rich-quick Triads who were operating within the HK film industry at the time). Production values are limited, but Lam A-do's excellent cinematography makes a virtue of the low budget art direction and rough-hewn locations, while Wong Ming-lam's snappy editing keeps the narrative moving along nicely. Some of the cutting seems a little ragged in places, however, indicating a rushed post-production schedule.

Elsewhere, director Cheng - taking a break from countless acting roles in the likes of "Run and Kill", "Crime Story", etc. - acknowledges the sexually ambivalent aspects of the prison setting with a couple of surprisingly candid 'sex' jokes, while the movie's only substantial female role (Gigi Lai Chi, playing Lau's ill-fated girlfriend) is basically sidelined in favor of the intense, 'platonic' friendship which develops between Lau and Ho. HK movie commentator John Charles has recently chided western observers for their constant citation of 'homoerotic undercurrents [in HK movies]... that would not be viewed in such a way by Chinese audiences'. Maybe not, but the filmmakers themselves seem to know exactly what they're doing! Ultimately, "Dragon in Jail" is an enjoyable entry in the HK crime canon, distinguished by its busy plot, fine performances, and energetic action sequences.

Mei Ah's region-free disc (distributed in the US by Tai Seng) is letterboxed at 1.85:1 and contains permanent Chinese/English subtitles (the English subs are poorly translated but comprehensible) along with a choice of soundtracks - the original Cantonese, or a Mandarin alternative - rendered in 2.1 Dolby sound. The faux 'stereo' mix simply spreads everything across the front speakers, including the dialogue, which sounds maddeningly lop-sided as a consequence. Furthermore, the disc contains 20 randomly-selected chapters and is programmed like a video CD, with no menu page, no time code, and no extras of any kind. The film itself runs 97m 49s, despite the 91m running time quoted on the packaging.