If you like the Stephanie Plum novels by Janet Evanovich, or at least did before they got monotonous, try these series:
Slash & Ranger just might be related, they are so similar... but the books have a slightly more serious story line/tone overall.
Description of book 1, from Goodreads:
I'm Lexi Carmichael, geek extraordinaire. I spend my days stopping computer hackers at the National Security Agency. My nights? Those I spend avoiding my mother and eating cereal for dinner. Even though I work for a top-secret agency, I've never been in an exciting car chase, sipped a stirred (not shaken) martini, or shot a poison dart from an umbrella.
Until today, that is, when two gun-toting thugs popped up in my life and my best friend disappeared. So, I've enlisted the help of the Zimmerman twins—the reclusive architects of America's most sensitive electronic networks—to help me navigate a bewildering maze of leads to find her.
Along the way, my path collides with a sexy government agent and a rich, handsome lawyer, both of whom seem to have the hots for me. Hacking, espionage, sexy spy-men—it's a geek girl's dream come true. If it weren't for those gun-toting thugs..
Where the Lexi Carmichael series has all the love life problems of the Plum series, it has none of the family eccentricities. The Spellman Files is the opposite - there is no real love life story line at all, but it has plenty of family characters.
Isabel Spellman, the uncompromising—okay, obstinate—twenty-eight year-old San Francisco private eye in Lisa Lutz's riotous debut novel, THE SPELLMAN FILES has her share of problems. And those problems all happen to be named Spellman. Her parents, Albert and Olivia, co-owners of Spellman Investigations, think nothing of placing their daughter under 24-hour surveillance simply to find out if she has a new boyfriend. David, her perfect older brother, who escaped the family business by becoming a lawyer, is hypercritical of just about everything Isabel says, wears, or does. Fourteen-year-old sister Rae lives on sugared snacks, considers recreation surveillance her favorite hobby, and believes that life is one endless opportunity for intra-familial blackmail. And good-natured Uncle Ray, a former cop and health food nut, now embraces gambling and drinking; and when he's not in battle with his niece Rae over the whereabouts of his favorite shirt, must be rescued from "lost weekends."
Welcome to Izzy Spellman's off-kilter world. Equal parts Sam Spade and Bridget Jones, she's a damn good investigator—if only her dysfunctional family would back off and let her do her thing. Izzy's cynical—okay, wise—enough to realize that a primrose-covered cottage with a white picket fence is not in her future. That's okay with her. Ever the jaded P.I., she catalogs her ex-boyfriends with calculated brevity, reducing her romantic misjudgments to curt summaries of name, age, occupation, hobbies, duration, and last words. No sooner has she met a new man that she begins composing his exit profile.