The higher you go, the farther you have to fall. Even if you are Heroes. The show's meteoric rise to international acclaim three years ago gave way to an equally speedy descent. In a way, creator Tim Kring and the network set the superhero drama up for failure by splashing out on an elaborate world press tour in the wake of the successful first season. We were front and centre during the pre-season-two media frenzy in 2008, as the cast junketed across the continents to make believers of us all. Actors Masi Oka (Hiro Nakamura in the Heroes universe), Sendhil Ramamurthy (Mohinder Suresh), Ali Larter (Niki Sanders/Tracy Strauss) and Greg Grunberg (pictured near right playing Matt Parkman, with Zachary Quinto as Sylar) made it to Hong Kong. They handled the hype with a sense of humility and humour - two qualities the show itself could use more of. Less than halfway through the second season buzz became bloat. Kring did not deliver on the promise to kill off main characters as needed to keep the cast lean and viewers guessing. Weighed down by multiplying story arcs and that whole space-time continuum thing (when a character has to preface a piece of dialogue with, 'I am future Hiro', you know there's something amiss), Heroes was getting lost and viewers were tuning out. The third season opener confirmed the worst; the show had become a colossally dysfunctional central nervous system, misfiring in all directions. Fast-forward to the present and the fourth season (Star World; Fridays at 10pm), and there is a small glimmer of hope that Heroes will find its bearings yet. It begins with Noah Bennet's discovery of a broken compass. In the right person's possession, the apparatus comes alive and points to ... a plot device borrowed from Lost - the show from which Heroes has so adamantly tried to differentiate itself. The introduction of this idea, which we'll let the show reveal, promises to give the series a much-needed centre of gravity. Perhaps this year all those dangling storylines with finally be tied up. Elsewhere, survival expert Les Stroud puts himself in situations that make Bear Grylls' (Man vs Wild) adventures look like a lazy afternoon by the pool, proving that a true Survivorman (Discovery Channel; Mondays at 10pm) can do it without the benefit of a second cameraman and fancy all-weather gear. Stroud's inventory of supplies for a seven-day stay in the deepest, densest part of the Ecuadorian Amazon rainforest: a blow gun, a spear (to protect himself from jaguars), a bit of damp tissue paper, three feet of fishing line, a can of pop, one match, a pocket-sized multitool, a harmonica and four video cameras - which he mans alone. When he's not busy building shelters, setting up his cameras and looking for sustenance, Stroud passes the time by playing 'the foot-fungus blues' on his harmonica. The less-than-glamorous reality of trying not to die by the hand of nature is the main theme of the show; Stroud doesn't try to make it seem fun at all. Still, if we were to choose between him and Grylls for a survival partner, there would be no contest - it'd be Survivorman all the way.