Formed in 1984 by Vadim Samoylov, Alexander Kozlov, and Peter Mai in Sverdlovsk.
During the recording sessions for their debut album "Second Front", Vadim's younger brother, Gleb, became a full-time member of the band.
The band lineup changed continuously since then, with the Samoylov brothers being bandleaders, swapping vocal duties.
The Samoylov brothers have been the principal songwriters of the band, together with keyboardist Alexander Kozlov.
[2] After the dissolution of Agatha Christie in 2010, the former lead singer Gleb Samoylov, together with keyboardist Konstantin Bekrev and drummer Dmitry Khakimov, formed the group The Matrixx.