General contractor Tom Silva helps homeowner Leverett Flint install a handrail in his spilt-level stairway. Back in the loft, Tom, plumbing and heating expert Richard Trethewey, landscape contractor Roger Cook, and host Kevin O'Connor try to guess "W... (more)hat is it?" Then Roger shows homeowners Mario and Jennifer Finocchiaro how to transplant a large rhododendron to another area of their yard.