As real-estate consultants who work as property whisperers on Unsellable Houses, Leslie Davis and Lyndsay Lamb are no strangers to coaxing every last dollar of resale value (and every last bit of potential-buyer-wowing appeal) from ho-hum homes. As second-time Rock the Block competitors denied victory in Season 3, they’re approaching this round of renovations with hard-won experience and more determination than ever. “We’ve learned so much, [and] we’ve grown so much since we left the block,” Leslie said. “We’ve opened a design studio. We’ve leveled up. We’re ready this time to take it all and redeem our name! I feel like Rocky!” (Fitting, since the twins would spend six weeks running up and down stairs in their three-story renovation site.)