The contents, extract and introduction are available in the PDF extract that Everyman has online, but for convenience I will present the contents here as well:
1. Action on the h-file
(1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Be3 h5)
2. A Twist in the c3 Sicilian
(1.e4 c5 2.c3 Nf6 3.e5 Nd5 4.d4 cd4 5.Nf3 Nc6 6.cd4 d6 7.Bc4 de5)
3. Neither Too Early nor Too Late
(1.e4 c5 2.c3 d5 3.ed5 Qd5 4.d4 Nc6 5.Nf3 e5)
4. Danger with the d4 Gambit
(1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.0-0 Bg7 5.c3 Nf6 6.d4)
5. Become a Chameleon!
(1.e4 c5 2.Nf3 Nc6 3.Bb5 e6 4.c3)
6. The Sveshnikov Gambit
(1.e4 c5 2.Nf3 Nc6 3.Nc3 e5 4.Bc4 Be7 5.d3 Nf6 6.Ng5 0-0 7.f4 d5)
7. Is e5 really so bad?
(1.e4 c5 2.Nf3 Nc6 3.Nc3 Nf6 4.e5)
8. Forcing Black to Defend
(1.e4 c5 2.Nf3 d6 3.Nc3 Nf6 4.e5)
9. Crossing White's Plans
(1.e4 c5 2.Nf3 d6 3.d4 cd4 4.Qd4 Nc6 5.Bb5 Bd7 6.Bc6 bc6)
10. A Turbo-Charged King's Indian Attack
(1.e4 c5 2.Nf3 e6 3.g3)
11. Following in Staunton's Footsteps
(1.e4 c5 2.Nf3 e6 3.c4 Nc6 4.Nc3 Nge7)
12. A Remedy to the Nimzowitsch
(1.e4 c5 2.Nf3 Nf6 3.e5 Nd5 4.g3)
John Emms wrote chapters 1, 5, 10, 11 and 12; Richard Palliser wrote chapters 3, 6, 7, 8 and 9, and Peter Wells wrote chapters 2 and 4. The series introduction is identical to that in other books in the 'Dangerous Weapons' series (except for 'Dangerous Weapons: The French').
I skimmed the extract (which covers the illustrative game to Chapter 5), which seems of the usual high quality of the Dangerous Weapons series. Out of all the lines given, I was only aware of about 6 of these lines, and most of those I had discarded as being innocuous. I will certainly be adding this book to my collection!