Danger Zone is American hard rock band Hardline's fourth studio album, and their first since Leaving the End Open.

Johnny Gioeli is the sole returning member from the Leaving the End Open lineup, and is joined by keyboardist and producer Alessandro Del Vecchio, guitarist Thorsten Koehne, bassist Anna Portalupi, and drummer Francesco Jovino.

Perugino, after listening to and approving the demos, sent them to Gioeli, who immediately became interested in reforming Hardline and recording the songs for a new album.

Gioeli and Del Vecchio were joined by Thorsten Koehne, also of Eden's Curse, Anna Portalupi of Lionville, and Francesco Jovino, also of Edge of Forever.

Axel Rudi Pell drummer Mike Terrana and returning Hardline guitarist Josh Ramos perform in place of Thorsten Koehne and Francesco Jovino.