GIVETHETHUMBSDOWN

LOXSTOCKANDBARRELCommon finds in a salmon smokehouse? BETTERLUXNEXTTIME"I need to install brighter lights later"? PUTINYOURTWOCENTSOffer advice ... or a hint to 24- and 72-Across CARLMARIAVONWEBERSee 12 STARTINGSOMETHINGIn switching on, is creating trouble for oneself GOINGINTORAPTURESEnthusing THEEAGLEHASLANDED1975 novel by Jack Higgins adapted into a film by John Sturges in 1976 GIUSEPPEGARIBALDIItalian patriot and leader of the Risorgimento who conquered Sicily and Naples for the emerging kingdom of Italy in 1860 WHENTHEWORLDSHOOK1919 H. Rider Haggard novel CAPTAINUNDERPANTSSuperhero with the catchphrase “Tra-la-laaaa!” (and a hint to the circled letters) WASINDEBTEDTOOWED8D THEDAYOFTHEJACKALFrederick Forsyth novel GIVINGONESELFAIRSWaving a fan and behaving very self-importantly FLUFFYNECKWEARBOA9D