In-beam spectroscopy of unstable nuclei is discussed from the aspects of the inverse kinematics and selectivity of direct reactions at intermediate energies. As examples of spectroscopy of neutron-rich Be isotopes, isobaric analog state of 1 4 Be and an isomeric 0 + state are presented. For the next phase of γ-ray spectroscopy, a new array consisting of segmented Ge detectors developed by CNS is introduced.