'Men like us, who actually know what they're talking about, don't say a thing because we vaguely believe it's bad form to tell the truth.'

November 1917. Siegfried Sassoon has been accused of insanity for his declaration against the first world war. As his doctor, William Rivers, gets further into his case, the more he starts to question the morality of his job. Based on real events, this drama details trauma, shellshock and sexuality.