A novel really unique, published in 1970 with a sequel in 1995 (the last novel published by Finney before dying, "From Time to Time"). Written in a style seemingly simple, smooth and pleasantly vivid as fresh spring water, this novel captures the reader from the first line with the scenes of an everyday life. A very normal workday life, where everyone could easily recognize himself almost without realizing it. Just riding the wave of this subtle satire of a daily life, Finney brings the reader into the core of the plot, straight toward the unexplored horizons of time. The classic themes of science fiction, time travel, here is unraveled with skilfully and originality, no clichés or typical time traveling stories commonplaces. Finney builds his story from the perspective of the human dimension, the common man view.