The infected patients at Project Noah find a new recruit as Carter begins to turn, and we find out why he ended up on Death Row.

While a lot happens in this fourth instalment of the TV adaptation of Justin Cronin’s first novel in his trilogy, there’s still a sense that things should be moving along a bit quicker, particularly as we’re nearly halfway through the season. Wolgast convinces his captors to build an outdoor treehouse for Amy, oblivious to what everyone has worked out – it’s for them to recce an escape!

As with last week’s episode we spend considerable time flashing back, this time to see how Anthony Carter (McKinley Belcher III) descended the slippery slope to conviction, and already there’s a clear distinction between the ‘good’ baddies and the ‘bad’ baddies, insidious leader Fanning (a snarling Jamie McShane) clearly sitting in the latter camp.

Verdict: ‘They can afford an outside security detail. I’m not Harry Potter’. A sniper on a rooftop is well-handled, Carter’s transformation is gory and Vincent Piazza’s Clark Richards continues to entertainingly butt heads with Wolgar, but it all feels ‘enough already’ and frankly I’m ready for the apocalypse now. 6/10

Nick Joy