With the musicians having thus far released 20 studio albums, three live albums, two compilation albums, three EPs, and one box set over the course of more than four decades, the thrash-metal rockers of Overkill headline a November 9 concert at Davenport's Capitol Theatre, Metal Injection describing last year's Scorched as "a violently spiky and virtually flawless cherry on top of a 43-year-long career."