Dead Certain by Claire McNab

When young Australian opera star Collis Raeburn is found dead in a hotel room surrounded by pills and alcohol, the authorities are quick to rule it a straightforward suicide. Unconvinced by the tidy scene, Detective Inspector Carol Ashton steps in to spearhead a proper investigation, immediately drawing the ire of the singer's powerful, hostile family. As Carol uncovers a tangled web of blackmail, hidden assets, and deep-seated fears within the music industry, she must trust her sharp instincts to find a killer—all while navigating the pressures of her demanding career and her own private life as a gay woman in the public eye.