Historically, I never watched this because I couldn't stand the main character played by Amanda Burton. I started watching the latest series (27) having forgotten about that, and got quite drawn into it. Then I backtracked to an earlier series (25) featuring the new set up along with the return of the Amanda Burton character (now a very successful business woman - well, she would be, wouldn't she?) and remembered why I didn't watch it before. She is still playing the repellant, hard faced, egocentric prima donna that I remember from series one. The rest of the cast I thought were OK. It's probably quite a long way off-mark about how forensics actually work, but as drama it works quite well.