Davis recounts how 1917 served as a formative moment in the development of two influential left-leaning voices, and by extension, the Labour Party itself. Through analysing the then liberal journalist Morgan Phillips Price – later to join Labour and, from 1929, serve as an MP – and Arthur Henderson, then Labour leader and a member of the Lloyd George Cabinet, we gain a new perspective on Labour’s shifting sands. Charting the shift such men made from being uncomfortable opposing the Liberals to, by 1918, being willing to back Clause IV and all the nationalising elements there within, Davis reconfigures the Russian Revolution as a significant influence in the development of the British Labour Party.