Inwazja Porywaczy Ciał by Jack Finney

In a small Californian town, residents begin to notice strange changes in their friends and neighbors, who seem to have lost their emotions and individuality. As the unsettling phenomenon spreads, a local doctor and his allies uncover a terrifying truth: alien seed pods are replicating humans, replacing them with emotionless duplicates. As the invasion escalates, the protagonists must race against time to stop the insidious takeover and save humanity from losing its essence to these soulless impostors.