“I go on a bright journey when I play music. If I’m in a dark place, I’m not in that dark place no more.”

Many of us have been in a dark place in the past couple of years. Missing the usual rituals that mark a death makes it harder to grieve fully. Circle of Fifths is less a conventional theatre production and more a cathartic space to honour the dead and acknowledge our loss. The crowd gather, in the Butetown tradition, by a brightly decorated coffin. The celebration begins.

What happens when the thing that brought you together has started pushing you apart? Troubled couple Cassie and Dafydd really need to talk about rugby: why he feels his career is over and she thinks he’s barely getting started. Or, to put it another way, why his priorities in life have started wildly diverging from hers. No wonder he’d rather talk about skirting boards and loft conversions.

A collection of eccentrics are gathered in a remote country house for a will reading. Heavy fog descends outside, but it’s the inside of Monument House that’s really dangerous. Will the squabbling over money turn into a more deadly game? Where are the hidden millions? And what is that noise coming from the cellar?