I don't know what on earth is going on at Amazon, but as of right now there are close to a couple of
hundred Mills & Boon (Harlequin in the UK, Europe and other territories) titles up for free. It's a staggering collection that covers pretty much everything - series romance, single titles, backlist titles, brand-new releases, preorders, bundles and box sets... you get the idea. I'm not gonna post all of them, but here's a select "few":