Once Jesus is arrested, He is taken to Annas’ house. Annas is the father-in-law of Caiaphas. Annas is a shrewd politician. He held a position that is something like a “godfather” in the temple establishment. He is the high priest during this time. He served in this position from A.D. 6 to A.D. 15. He had five sons and Caiaphas succeeded him. http://ref.ly/Lk3.22. This scripture says that the priesthood of Annas and Caiaphas was during the beginning ministry of John the Baptist. http://ref.ly/Mt26.21-23 Caiaphas served from A.D. 18-36. Annas was a Sadducee, and he did not believe in the resurrection.
Caiaphas made a statement that was really a prediction that mentions the upcoming event of Jesus’ subsequent arrest and death. He said that it was “expedient for you that one man die for the people, and that the whole nation not perish.” (NASB) This statement is noted in http://ref.ly/Jn18.14.
Jesus goes through three trials. Annas is a former chief-priest. Christ first appears before Annas. This is a show of loyalty to the former high-priest. This happens while the Sanhedrin is gathering for the main trial. Peter was nearby.