Where does music come from? That’s the vital question posed to Sergei Rachmaninoff in Dave Malloy’s extraordinary 2015 chamber work, as the great late-Romantic Russian composer – stuck in his third year of harrowing writer’s block – tries to relocate his gift. It comes from others and from himself; from past and present; from everything and nothing. It is ephemeral, and yet it is at the core of his very being.

September 10 is World Suicide Prevention Day, and Channel 5 marked the occasion with this sobering documentary. Focusing on male suicide – incredibly, now the UK’s biggest killer of men under 45 – it studied six patients at the Riverside Mental Health Centre in Hillingdon, west London. The results were both harrowing and heartbreaking.

We're saying goodbye to a much treasured friend. Fleabag will live on, of course – other actresses have and will inhabit the role – but Phoebe Waller-Bridge, its creator, has said this short run at Wyndham's Theatre is the last time she will perform the character on stage.

This is a painful and poignant study of character-disintegration, and a triumph for its writer, director and star Jim Cummings. He plays small-town police officer Jim Arnaud, a man trying to do his best while a rising sea of troubles threatens to drown him.

Persistent depression is debilitating and terrifying, as Alastair Campbell illustrated vividly in this punchily-argued film. We first saw him looking like a disturbed, miserable ghost, as he described in his video diary a sudden plunge into depression at New Year, 2018. He seemed to be ebbing away before our eyes.

In the week that the Jeremy Kyle show has been yanked permanently off air after the death of one of its vulnerable guests, the timing couldn’t have been better for the BBC to show how sensitively the old-school broadcaster handles contributors with mental health problems.

Often the greatest works of dramatic absurdism spring from the worst extremes of human experience, whether it’s Ionesco’s Rhinoceros responding to fascism, or Havel’s The Garden Party satirising the irrational cruelties of Prague’s Soviet occupiers.

Where would you go for a devastating study on the human condition? The home movies of teenage skaters would be very low down on that list. But most of those movies aren’t filmed, compiled and analysed by Bing Liu, the director of Minding the Gap. Perfectly balancing perspective and curiosity, it’s perhaps the most unexpected achievement on the year.

We're Staying Right Here, Henry Devas's debut play premiering on the smaller of the Park Theatre's two stages, carries a trigger warning on the theatre website: "May be affective for people coping with mental health issues". There's also, we're told, "very strong language, simulated violence, flashing lights, and vaping".

Well, you have to give it to French playwright Florian Zeller — he's certainly cracked the problem of coming up with a name for each of his plays. Basically, choose a common noun and put the definite article in front of it. His latest, The Son, is the last in a trilogy which includes The Father and The Mother.