 He took increasingly long holidays; in 1950 and again in 1951 he spent almost five months vacationing at his Abkhazian dacha.Stalin nevertheless mistrusted his doctors; in January 1952 he had one imprisoned after they suggested that he should retire to improve his health.In September 1952, several Kremlin doctors were arrested for allegedly plotting to kill senior politicians in what came to be known as the Doctors' Plot; the majority of the accused were Jewish.