Across

• 1.

  DOPPELGANGER: DOPPELGANGER
• 7.

  REALTY: REAL-TY EVOLVE: EVOLVE (love rev. + ve)
• 8.

  AREAS: AREAS (hidden) STAIR: ST(A)IR
• 9.

  STENO: STENO (anag.) TIMES: TI(M)ES
• 10.

  ALIBIS: ALI-B-IS TRAILS: T-RAILS
• 12.

  PENT: PENT (hidden) AURA: AURA (hidden)
• 14.

  STATE: STATE (anag.) DARNS: DARN-S
• 16.

  ACCOST: AC(CO'S)T SPIDER: SPIDER (anag.)
• 18.

  POSE: P-O'S-E BATS: BATS (first letters)
• 20.

  BRITON: BRITON (homophone of Britten) ELAPSE: ELAPSE (peels anag. around a)
• 21.

  LINT: LI(quored-up preside)NT EAVE: E(A)VE
• 22.

  STERNS: STE-RN'S LOSSES: LO-SSES

Down

• 1.

  GESTAPO: GESTAPO (anag.) DRISTAN: DR(I)S-TAN
• 2.

  AVAILED: AVAILED (anag.) OESTRUS: OESTRUS (anag.)
• 3.

  NORM: N-OR-M PATE: P-AT-E
• 4.

  PLAN: PLAN (hidden) GLEE: GLEE (hidden)
• 5.

  EVASIONS: EVAS-I-ON-S (save rev.) ETIOLATE: ETIOLATE (anag. + e)
• 6.

  RESTS: RESTS ([ac]tress anag.) LYRES: LYRES (hidden rev.)
• 11.

  INACTIVE: IN-ACT I-VE ARTISANS: ART-IS-ANS
• 13.

  OSTENDS: OSTENDS (anag.) PERSEUS: PERSEUS (super anag. around see])
• 15.

  ADEPTS: ADEPTS (tapes anag. around d) ROSTER: ROSTER (anag.)
• 16.

  ABBES: ABBES (anag.) SPELL: SPELL (double def.)
• 17.

  CARAT: CARAT (hidden rev.) POLIO: POLIO (pool anag. around c)
• 19.

  ASHE: A-SHE GOON: GO-ON