S1, E3: Week One of construction begins with a stretch of hard labor: old-fashioned, low-tech digging. Two new students, Ian and Alex, join the team, adding to the colorful and competitive cross-section of young builders. Another student, Adriana, has missed the week of digging and arrives as the foundation's concrete is poured. Tess is unhappy with the lack of progress in her daughter's attempt to purchase last year's house. N.H.S. unexpectedly finds another enthusiastic buyer who falls madly in love with the house during a tour. But a murder across the street places that sale in jeopardy, and leaves the students shaken and concerned for their safety.