‘This is our guy’: Inside the hunt for Austin’s serial bomber

Sometime before the sun fully rose on March 2, an unemployed college dropout arrived on Haverford Drive in Northeast Austin and walked beneath the canopy of an oak tree.
He came to the porch of a brick house bearing a box, a twisted gift for an unsuspecting recipient.
Police have not said whether they believe Mark Anthony Conditt drove here, or if he walked in — but cellphone data ties him to the location early on March 2, a crisp, almost cloudless night.
In a recorded confession weeks lat