especially her series that dive deep into historical and fantastical worlds. Her 'Waterfire Saga' is a captivating quartet that follows mermaids on epic adventures, blending mythology and environmental themes. The books in order are 'Deep Blue', 'Rogue Wave', 'Dark Tide', and 'Sea Spell'. Each installment builds on the last, with rich world-building and strong female leads. Another series is 'The Tea Rose' trilogy, which includes 'The Tea Rose', 'The Winter Rose', and 'The Wild Rose'. These books weave together romance, history, and drama across generations, set against the backdrop of early 20th-century London and New York. The way Donnelly intertwines personal struggles with historical events makes these series unforgettable.