THE LAST EQUATION OF ISSAC SEVERY by nova jacobs (fiction) fantastic puzzle of death, clues, family secrets, & mathematics + so very clever and so much fun = 👍

Trials of Apollo - the hidden oracle by Rick Riordan
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How do you punish an immortal?By making him human. After angering his father Zeus,the God Apollo is cast down from Olympus.Now without his godly powers,the four-thousand-year-old deity must learn to survive the modern world until he can somehow find a way to regain Zeus's favour.Apollo needs help,and he can think of only one place to go...an enclave of modern demigods known as Camp Half-Blood.