UMUR "Immortalis" is the 15th full-length studio album by US, New York based thrash metal act Overkill. The album was released through Bodog Music in October 2007. It´s the successor to "ReliXIV" from 2005 and features one lineup change since the predecessor as drummer Tim Mallare has left and has been replaced by Ron Lipnicki. Randall Blythe (Lamb of God) guests on vocals on "Skull and Bones", singing with Bobby "Blitz" Ellsworth. A promotional video was shot for "Skull and Bones".

Stylistically the material on "Immortalis" continues the thrash/groove/heavy metal style of "ReliXIV (2005)". "Blitz" sounds as driven and rock´n´roll badass as ever with his rough voice and screaming vocal style, and the rest of the band also deliver their parts with the right amount of conviction and passion. This is obviously a skilled and seasoned band playing and right from the opening track "Devils in the Mist" to the closing track "Overkill V" we´re treated to high level performances.

The material is well written too and compared to the predecessor, "Immortalis" features a few more tracks which stand out. This along with a relatively well sounding production, makes "Immortalis" one of the better albums in the less remarkable part of Overkill´s discography. A 3.5 star (70%) rating is deserved.