The latest Inside No.

9 is tense, dramatic and grisly, but not satisfying.

Warning: thisInside No.

Reece Shearsmith and Steve Pemberton as Drew and Blake in Inside No. 9 episode “The Trolley Problem”

After all this time, another first.

Having blasted through the guest star budget on last weeks stunning five-star opener, The Trolley Problem isInside No.

9s sole story to feature only Steve Pemberton and Reece Shearsmith on screen.

(Bernie Cliftons Dressing Roomand, technically,The Stakeout, each had one other character).

Intense, emotional showdown?

Ideally though, theyd have a stronger script to perform than this one.

The action took place in a remote country home, against the driving rain of a noisily dramatic storm.

The script didnt wear its learning lightly.

Taking into account his unhinged state of mind, Drews actions still lacked plausibility.

Would these two men conceivably never have met in the aftermath of Ellies death?

How likely is Drews sick strategy as his first attempt at revenge?

Why hadnt Drew gone through official channels to have him struck off?

Once this track of thinking starts, its hard to stop it.

Blakes son Robbie was shy, but he was supposed to have been out that night with friends.

Robbie was buried in a box underground but had a clear mobile phone signal.

Given more screen minutes, they couldnt have been resolved.

It also comes down to tone.

None of it matched.

Its unusual for performance to outstrip story, but thats what happened in The Trolley Problem.

It was packed with ingredients that didnt coalesce.

Still, that nasty final shot of Drew burning to death reflected in Blakes glasses?

Itd make a terrific poster.

9series 9 continues on Wednesday May 23 with Mulberry Close.