Angel, the series, is the age we all want to be: about 20. Angel, the man, despite the length of time since Just Another Angel, is the age we try to be, thirtyish, which is probably impressive time warping.
Angels Unawares can be read on its own, with no prior knowledge needed of the previous 14; I can only say that you've missed out, especially as every one is 'referred to' in some way in this one. But of course, I would say that, as I am rather biased and love every single one.
This one is very special. It might be the last. A regular character dies, as pairing Angel off in That Angel Look didn't work, 7 books ago.
After the funeral, which has a scene which will go down as one of the classics with a "stroll-on" role for a cat (not Springsteen for a change), Angel follows a gruesome trail of dead bodies to an even more gruesome family whose business is human trafficking. Aided, and occasionally abetted, by Huddersfield's 007, the Thompson Twins and Veronica, he also has to deal with his mother, which frankly is enough stress for anyone....no, there's also the new baby, so far officially un-named.
The ending is the typical dramatic Angel showdown, with the lightest sprinkling of farce and with a fair pinch of tragedy. Still has me sniffing. Maybe he overdid the pepper.
This is a great read for old fans (like me) and new fans (you're late, where were you?) alike.