You don't need to read this book if you have already read Joel McIver's masterful books, JUSTICE FOR ALL: THE TRUTH ABOUT METALLICA and TO LIVE IS TO DIE: THE LIFE AND DEATH OF METALLICA'S CLIFF BURTON.
If you have not read McIver's books, then be sure to read TO LIVE IS TO DIE for an account of Cliff. And before that, read Wall's ENTER NIGHT for an up-to-date biography of the band and for more even handed musical criticism. McIver doesn't like much of Metallica's work after AND JUSTICE FOR ALL. Wall sees more value in it, though he is unduly negative on DEATH MAGNETIC.
Unlike McIver or any previous biographer, Wall spends some time discussing the rumor that shortly prior to Cliff's death, Cliff and James had seriously discussed replacing Lars. The speculation that Dave Lombardo from Slayer would have been brought in to replace Lars seems spot on, as Lombardo was particularly unhappy with his bandmates at that time. What would have happened to Lars? Wall doesn't speculate, but I'd wager he would have gone to Dave and joined up with Megadeth. Now that really would have made for some bitter rivalries in the thrash world!
Wall helped answer a question that always bothered me: When they got to be arena headliners, why did Metallica have Queensryche and The Cult open for them? Why didn't Metallica take a page from Ozzy's playbook and have an opening band that was more underground and extreme? The answer: both Queensryche and The Cult were represented by Metallica's management, QPrime. I really like both Queensryche and The Cult, and I enjoyed those shows. But it would have been great if Metallica challenged the audience with Death, Cannibal Corpse, or Morbid Angel as an opening band. And what a difference that could have made for Metallica's future development.
Wall makes a couple of howling mistakes, both owing to his being from Britain: First, he claims that the GARAGE DAYS RE-REVISITED EP was released as THE $9.98 EP in America. Incorrect. It was released as THE $5.98 EP on cassette and record and was also released on CD as THE $9.98 CD. Second, he claims the album AND JUSTICE FOR ALL takes its title from the final line of the Declaration of Independence. The phrase is actually found in the final line of the Pledge of Allegiance. But the more direct inspiration for the album title comes from 1979 Al Pacino movie AND JUSTICE FOR ALL.
All in all, it's worth a read if this will be the first book on Metallica you pick up.