Three years ago, the award-winning poet Craig Arnold went missing in Japan. Few clues were ever found, leaving his family and his longtime partner, the poet Rebecca Lindenberg, to conclude the worst. Lindenberg has written a new book of poetry, an extended elegy really, to Arnold. As poets, words and conversation united Arnold and Lindenberg, and she says that writing the poems in her new book helped her both continue the conversation and let it go. Tuesday, Lindenberg joins us to talk about her poems and the man they memorialize.