Appearing for the first time in a new, larger format, the ninth edition of Calvert's Powers of Arrest and Charges covers the many changes that have taken effect since the last one was published in 1987. Central to these, of course, are the effects of PACE and the resultant Codes of Practice. The impact of the Criminal Justice and Public Order Act 1994 is given full coverage, and the new powers in relation to trespassers on land, raves and the right of silence are also dealt with. Other pertinent developments include the Children Act 1989 and the Road Traffic Act 1991.