Crossword Puzzle Serious offender

Clue: Serious offender

Offenders (CULPRITS with 8 letters)
Offender, to an officer (PERP with 4 letters)
Most lacking in seriousness (JOKIEST with 7 letters)
Assist an offender (ABET with 4 letters)
Where offenders are held (DTNTNCNTR with 9 letters)
Offender, in police lingo (PERP with 4 letters)
Novel about the seriousness of a weather phenomenon? (RAINBOWSGRAVITY with 15 letters)
Ft. Dix offender (AWOL with 4 letters)
Incarceration for certain offenders (HOUSEARREST with 11 letters)
Offender, in crime-speak (PERP with 4 letters)