In Alone, the second Valentino novel from Loren D. Estleman, our film detective finds himself up to his ears in renovating the old movie palace he's bought, with the help of his contractor, Kalishnikov (really!), and hindered by a supercilious government building inspector who could make life very difficult for him indeed. In the meantime, a very wealthy magnate has invited Valentino and his date, Harriet, to a party in honour of Greta Garbo's centenary, requesting everybody to dress in appropriate costume. Harriet turns out to be a dead ringer for Garbo, which causes the host - whose late wife was a great friend of the film goddess - to faint, which in turn allows him to talk privately to Valentino about the fact that his secretary is blackmailing him with a letter, purported to be from Garbo to his late wife and suggesting a very, er, intimate relationship between them. When said magnate subsequently shoots and kills said secretary, citing blackmail and physical threats as the cause, Valentino reluctantly finds himself teaming up with a fairly unsavory police lieutenant to get to the bottom of the matter.... I rarely read books by the same author back-to-back, as usually the enjoyment is diluted by repetition, but in this case, I found Valentino just as engaging and entertaining as I did in the first novel, Frames. Relationships deepen here, between Valentino and Harriet, and between Valentino and Professor Broadhead, and between the Prof and Fanta, a decades-younger woman who is studying law at UCLA. The resolution of the situation was not what I expected, and the tidbits about the screen icon, Garbo, both during her time in Hollywood and in her reclusive life afterwards, were fascinating to read. Again, Estleman concludes the novel with bibliographies, about Garbo in particular and silent films moving into talkies more generally, and provides a generous filmography of Garbo's films, with detailed synopses. How often can you say you've read a novel with real-world appendices like that? Recommended!