On paper, this movie had potboiler written all over it. A fledgling director, forced to share the task, an almost unknown cast, low budget and a presumed ho-hum adaptation of yet another Alistair McLean adventure story. But don't be misled, this is actually an entertaining, even exciting thriller, with a credible story, well acted with good location work in Amsterdam and featuring as its highlight an action-packed motor-boat chase through the city's tight maze of canals.

It starts arrestingly with a callous triple murder with the killer casually and noiselessly walking into a house and silently executing his three defenceless victims and follows it up with another surprise murder at Amsterdam airport, this time of an Interpol agent meeting up with a colleague. Said colleague is the film's principal man-hunter, played with Scandinavian stoicism (although he's supposed to be American), by Sven-Bertl Taube, who accompanied by his English, female contact in the city, former lover (as we learn) Barbara Parkins, tracks his quarry to a ruthless drug-smuggling ring, whose base appears to be of all things a monastery, which sidelines in manufacturing and dispensing toy dolls and bibles for the tourist trade, but which secretly contain packages of heroin. This gang thinks nothing of executing suspected informants or suspicious investigators and signifies their deaths with a symbolic "puppet on a chain", one of the toy dolls hung by a chain.

Being Alistair McLean, there's a major plot twist at the end when the gang-leaders are revealed which I admit I didn't see coming for once, itself following on from the aforementioned hair-raising pursuit through the waterways as Taube a chases the baddie more for personal revenge than for the ends of justice.

Like I said, there was a lot to like about this movie. The direction, although shared, I found to be pacy and engrossing, the acting above average, besides Taube and Parkins, I enjoyed seeing Mr "Voice of a thousand adverts", Patrick Allen in a cinema role for once and who ironically for a man famous for extolling the benefits of newly-built houses in the U.K. from a helicopter, finds himself in a life or death situation outside a building where a chopper might have been of benefit to him.

Sure the fashions, a cheesy disco sequence and an intrusive Euro-electric soundtrack date it somewhat but this on the whole was a gritty, low-key thriller which I really enjoyed. And trust me, I'm not yanking your chain when I say that.

Truly atmospheric Euro-thriller from the early seventies, boasting one of the best chase sequences ever, and a plot riddled with holes.

US Agent Paul Sherman (Taube) arrives in Amsterdam to investigate drug trafficking between Holland and the US. Together with undercover agent Maggie (Parkins) he begins to close in on the villains...

Given that Sherman and Maggie are working together, they don't seem to share much information. If they had debriefed each other a little more thoroughly, much of what eventually transpires could so easily have been avoided (e.g., how come Maggie fails to tell Paul about the dodgy nuns and the bibles she witnesses in church?). This (and the unexplained accents - a Swede playing a Dutch-American, a Brit and a Canadian playing Dutch) aside, it's action-packed, makes great use of its Dutch locations, and has a nice twisty ending.

Extra-groovy nightclub scene too!

Historically, the 1946 Dick Powell movie "To The Ends of the Earth" kicked off the drug smuggling movie genre when the old Production Code Administration amended the infamous Motion Picture Code in 1946 to allow the depiction of narcotics traffic. Previously, the PCA refuses in most instants to let filmmakers name the narcotics in their movies, much less show people abusing these substances. "The French Connection" captured the most awards with a Best Picture Oscar in 1971, and then the Alistair MacLean heroin thriller "Puppet on a Chain" came out in 1972. The formulaic "Puppet on a Chain" is not half as exciting as either "The Satan Bug" or "When Eight Bells Toll," two superior MacLean sagas. This ranks one of the lesser MacLean melodramas.

Since Dutch authorities in Amsterdam cannot get a fix on the folks in their fair city who are smuggling tons of heroin to the United States, a dapper but divorced narcotics agent from Washington, Paul Sherman (Sven-Bertil Taube of "The Eagle Has Landed"), heads to the city of canals and barrel organs to see what he can do. Alistair MacLean astonished everybody with his dynamic "Where Eagles Dare" screenplay, but nobody will be astonished by this lethargic thriller that spins more time with talk instead of action. For example, sixty-four minutes elapses before director Geoffrey Reeves stages a decent hand-to-hand combat fight. Okay, the earlier fight scene at 21 minutes into the action in the hotel room where our hero stays qualified as a one-sided, disposable scuffle, even though the intruder died. Anyhow, this respectable mystery unfolds after three people are gunned down by a mustached hit-man wearing gloves and armed with a silenced automatic pistol. Dude drives up, walks in, and guns them down in the living room.

The next thing we see is our handsome hero aboard a jet landing in Amsterdam. A man is shot at the airport where Sherman was supposed to have made a rendezvous with him. Anyway, Amsterdam authorities are not happy with the arrival of Sherman and the interference of a Yankee narco man in their backyard. The only remnant of "Where Eagles Dare" here is the use of a back-up agent, Maggie (Barbara Perkins of "Valley of the Dolls"), who does a bit of her own snooping without arousing suspicion. Yes, like the Mary Ure character in "Where Eagles Dare," nobody is supposed to know that Maggie is a part of the plan. Maggie investigates a suspicious looking church where Bibles are passed out to nuns wearing fishnet hose. Naturally, Maggie and Sherman have an intimate moment to smooch before he proves his action hero chops against a thug who loves to strangle his victims.

Meegeren (Vladek Sheybal of "From Russia with Love") serves as the minister but you know that he is up to no good. Hmm! Meanwhile, Amsterdam Police Chief Colonel De Graaf (Alexander Knox of "You Only Live Twice") resents the cooperation that he has to extend to the troublesome Sherman. Things grow more interesting after the heroine is murdered by the evil villain who wraps a chain around her neck and strangles her. Of course, we are not shown the entire strangulation, but Barbara Parkins does a great job of begging for mercy before she winds up dangling next to a doll whose facial features resemble her. Eventually, our hero shows up at the castle where the villains hide out. Not only does Sherman discover a heroin laboratory with dolls neatly arranged for packing, but he also stumbles into Maggie hanging from the ceiling. The villain tries to dispose of him initially by piping the deafening sounds of clocks chiming into his ears via a headset. Fifteen minutes of this will drive a man crazy, the villain warns, but twenty will kill him. Lenser Jack Hildyard does a good job of enhancing the agony that our hero feels by photographing him with wide-angle lens. The resourceful Sherman escapes.

Eight-one minutes into the action, Don Sharp takes over from Reeve and helms an outstanding power boat speed chase through the canals of Amsterdam that concludes with the villain smashing into a gate. The villain wearing a white suit and fedora is a nice touch. Anyway, Sherman tracks down the villains behind the villain and a neat revelation occurs when they surprise our hero. Yes, there is a dirty cop involved in these hijinks. The chief villain explains that each doll can pack up to $60-thousand dollars in heroin. The finale includes a brief gunfight at a shadowy warehouse where the hero takes a slug in the shoulder and the villain takes a fatal plunge.