Our Little Secret by Roz Nay

Saskia is missing and the police are questioning Angela, the ex-girlfriend of Saskia's husband, HP. HP and Angela were very close as teenagers and she has not taken well to being dumped for Saskia, even though it happened years ago. When Detective Novak asks Angela if she knows what happened to Saskia, Angela proceeds to tell him the whole story, starting with when she and HP met. Did Angela really harm Saskia, or is this just an opportunity for her to mull over what she considers past injustices? While Our Little Secret is a quick read, there are other psychological novels that I would put instead on my sure bet list.