Isabeau Willcox feels like she's living in a dream. Brooding billionaire Chase Drake wants her, and what's more, he wants to show her his world, his darker side that includes a secret sex dungeon and deliciously naughty toys that spark her imagination and make her knees weak. When he shackles her and makes her his slave, she's brought to heights she never imagined. But when he asks to make their arrangement more permanent, she remembers how quickly he's dismissed previous assistants. Will he tire of her and drop her like all the rest? Or is this the love she's been waiting for? This is the third part of the "Billionaire's Beck and Call" series by best selling erotica and romance author, Delilah Fawkes. At His Insistence (Part 4) is available now! EXCERPT: Buzzing ripped through my body, making my knees buckle. I fell to the carpet, bracing myself against the ottoman as my core squeezed around the pulsing toys. "Once you've cum twice for me, I'll let you out, and we'll hear that safe word." "What?!" I gasped. He wanted me to cum twice? Here and now? While he watched? My cheeks burned, but the vibrations were making it hard to feel anything else, including shame. My whole world narrowed to the knowledge that he was watching me, controlling me. The pattern of vibration changed, pulsing twice, then once, slow, then fast, and I knew he was playing my body like an instrument from afar, willing me to cum for him. He didn't have to wait long. The pulsing in my ass against the egg in the front made me come apart, wailing on my back, legs squeezed together as my body convulsed. I shuddered, my thighs trembling, my clit overly sensitive, but the vibrations kept on. And just when I thought I couldn't take it any longer, Mr. Drake amped up the power. My screams echoed off the walls, filling my ears.