One of the most important manuscripts discovered in recent times is the 4th century Codex Tchacos. It contains 4 texts, two of which (The Letter of Peter to Philip and The [first Apocalypse] of James) were already known from the finds at Nag Hammadi. The other two present hitherto unknown Gnostic writings (The Gospel of Judas and a text which researchers have named Allogenes). This publication presents the Coptic texts with a German translation on the facing pages, together with detailed