The first title in Carrie Doyle’s Hamptons Murder series, Death on Windmill Way, is free, and the next two titles are discounted, right now, Feb 11, 2021, in both the US and UK. Prices are $1.99/£1.44 for the second title, Death on Lily Pond Lane, and $2.99/£2.16 for the third, Death on West End Road. And the non-free ones are also eligible for VIP or coupon discounts at Kobo US. Some of these have multiple “editions” listed at some retailers, so use caution before you buy these – make sure you haven’t bought them before!
Links for the entire series: Kindle US | Kindle UK | Kobo US