Sometimes fics grow in the dark when you turn your back on them

While I was at my parents' house in North Carolina, Genetic Markers grew a coda/chapter 2. Epistolary, sort of. Epistoblogary.

Sherlock; Sherlock/Mary/John, explicit, etc. This is the part where everybody has ~feelings~ about Those Things That Happened Before We Became A Happy Triad Trying to Conceive a Second Kid Just Like the First One Except This One Will Have Sherlock's DNA So We Might Have to Fire- and Haz-Mat-Proof the Nursery A Lot Sooner.