dzhokar tsarnaev's car was that of the m.i.t.'s officer. attorneys don't deny he took part in the bombings and shootings but claim his brother was the mastermind and dzhokhar should be spared the death penalty. robert durst is on 24 hour suicide watch. prosecutors say if he is convicted on the charges led to his arrest last weekend he may never leave the state. evidence against durst is collected in several places. abc's matt gutman with the details. >> reporter: robert durst the focus of a nationwide dragnet for evidence in the mysterious deaths of at least three people, including his first wife. his seeming confession seen in the hbo document series "the jinx." >> killed them all, of course. >> reporter: in new orleans, new documents alleging durst was planning to flee the country, armed not only with a .38 special, a pillow-sized bag of pot and fake i.d. but a full-face latex mask and over $42,000 in cash. durst held here in louisiana now