Inside the Company, Studio, 8.30pm

THIS pleasant new documentary series provides an interesting look behind the scenes of Sydney's renowned Belvoir St Theatre, where up-and-coming actors get important opportunities, and some of the biggest names of the Australian stage enjoy treading the boards. Tonight's episode follows the company's artistic director, Ralph Myers, as he sets about directing the recent production of Noel Coward's Private Lives. That's a big enough job in itself, but Myers and the Belvoir St team have a whole lot more on their plate. There's the media launch for the new season, and the company's Helpmann Award-winning production of Ibsen's The Wild Duck is headed to Oslo, which will require the casting and training of a Norwegian duck.

Cranmer & Son, National Geographic, 8.30pm

IF THERE were an Emmy for least convincingly scripted storyline in an ostensibly factual program, military antiques dealers Christian and Alex Cranmer would be a shoo-in. Tonight dad Christian proudly shows young Alex his most treasured possessions: a pair of 17th-century French double-barrelled pistols. The remarkable weapons are worth $100,000 for the pair but to Christian, they're priceless. Naturally, this inspires Alex to sneak into his dad's house, steal the pistols and sell them on the internet. At least that's what we're supposed to believe. It's as silly as all get-out but the show does show some fascinating pieces of military history. Tonight's include a Soviet sniper rifle of the kind famously used by Vasily Zaytsev during the Battle of Stalingrad.

Scam City: Bangkok, Nat Geo Adventure, 8.30pm

Travel expert Conor Woodman heads to Thailand to look at the gem scam that rips off tourists who want to make some easy money.

Sixgill Shark, Nat Geo Wild, 7.30pm

Documentary about the curious and little-studied bottom-dwelling sixgill sharks.

Four Weddings Australia, LifeStyle You, 8.30pm

Brides attend and rate each other's weddings.