No 12428, Saturday 22 Sep 2018, Incognito

Any more theme words from the movie 'Come September'?
Back to using the dreaded 'extraneous' indicator after abandoning it for a few weeks. Setters/solvers let me know if this is ok or if I should permanently abandon using it

Across

7. 2/3 of 27 arrive (4) COME {COMEdy} 27a is COMEDY
8. Beep terms out in “Ninth Month” (9) SEPTEMBER {BEEP+TERMS*}

10. Kirk's got a child at each side of old town (6) CHURCH {CH}{UR}{CH}
11. Young lady purloins metal and pulls wool over the eyes (8) MISLEADS {MIS{LEAD}S}
12. Interrogate poser (8) QUESTION (DD)
14. Hounds ran away to river (6) HUDSON {HOUNDS*}
16. USA mint is destroyed — it may cause flooding (7) TSUNAMI {USA+MINT*}
18. One musical group's on leave (7) ABANDON {A}{BAND}{ON}
21. Ex-student saw and followed instruction (6) OBEYED {OB}{EYED}
23. Got back from uncle's shop and planted grass around river before commencement of monsoon (8) REDEEMED {RE{DEE}{Monsoon}ED}
25. Abraham has non-drinking or primarily sober criminal assistants (8) ABETTORS {ABE}{TT}{OR}{Sober}
27. Beautiful lass is initially dropped for douchebag at first! Funny business! (6) COMEDY {COME(-l+D)Y}
29. Rod's following Metropolitan Police HQ's standard? (9) YARDSTICK {YARD}{STICK}
30. Mona left famous painting for Elizabeth, perhaps (4) LISA {monaLISA}

Down

1. Mughal queen loses a broken spur and pants (8) JODHPURS {JODHa}{SPUR*}
2. Look closely // for a person doing his job at a convenience (4) PEER (DD)
3. I'm confused about this badly! Necks of lands? (6) ISTHMI {THIS*}{I'M*}
4. Superintendent of Police at university has old crockery with froth on top (7) SPUMING {SP}{U}{MING}
5. Raj's mistress has returned ball after one, following setter's memorandum at first (8) MEMSAHIB {ME}{Memorandum}{HAS<=}{I}{B}
6. Ex-student's old English instrument (4) OBOE {OB}{O}{E}
9. Wireless “Advertisement's in the river in Spain” (5) RADIO {R{AD}IO}
13. Yellowish-beige, for example, seen around New Delhi initially (5) SANDY {SA{N}{Delhi|Y}
15. Move to music and cavort in front of church (5) DANCE {AND*}{CE}
17. Mouse had run helter-skelter in lodging for nutcases (8) MADHOUSE {MOUSE+HAD*}
19. Dove rose awkwardly — too much of drug, perhaps (8) OVERDOSE {DOVE+ROSE}
20. Harsh detectives return carrying mutilated rats! (7) DRASTIC {CID<=} around {RATS*}
22. Lad hugs a couple of boys for a copper (5)  BOBBY {BO{B}{B}Y}
24. Fine after last month starting of engine to remove carbon (6) DECOKE {DEC}{OK}{Engine}
26. Rent not returned around end of December (4) TORN {NOT<=} around {decembeR}
28. Military officer follows mummy for a drink (4) MALT {MA}{LT}

Reference List
Child=Ch, Old town=Ur, One=A, Ex-student=OB, River=Dee, Abraham=Abe, Non-Drinking=TT
Superintendent of Police=SP, University=U, Ball=B, One=I, Setter=Me, Old=O, English=E, Advertisement=Ad, New=N, Church=CE, Detectives=CID, Boys=B, Fine=OK, Last Month=Dec, Military Officer=Lt, Mummy=Ma

Colour/Font Scheme

Definition, Solution, Component letters, Embedded links, Theme word,  Anagram Indicator, C/C indicator, Reversal Indicator, Hidden word Indicator, Letter Pick indicator, Deletion Indicator, Homophone Indicator, Movement Indicator, Positional Indicator, Substitution, Indicator, Link/Connector, Extraneous

GRID

No 12427, Friday 21 Sep 2018, Neyartha

RULES FOR POSTING ON FRIDAY ONLY

All those who are not regular commenters but who are rookie commenters or silent followers of the blog are requested to post answers with annotations in the comments section. In your own interest please avoid looking up the answers from the interactive version. Don't hesitate to post your annotations, in case you make a mistake in the annotation someone will correct it with the right annotation.

Each commenter is requested to post only 3 answers thereby giving others also a chance to participate. Please provide all your answers in one comment.

Regular solvers/Veterans can post 1 answer each, but after 11 AM only 

The regular blog will replace the clues at 2 PM.

Thanks for the response, here's the regular blog.

ACROSS
1   Regular cadence interrupted by Leo's blundering in the teen years (11) ADOLESCENCE {AD{LEOS*}CENCE*}
9   Yankee entering the Lok Sabha is captivated by the roles of a mythological character (7) ULYSSES {U{L{Y}S}SES}
10 A gift from the office to discard the informal information after setback (6) LEGACY {GEL<=}{AgenCY}
11 Farm with an upward slope (5) RAISE [DD]
12 Dangerous python constricting a duck in a violent storm (7) TYPHOON {TYPH{O}ON*}
15 Announced film about an animal shelter (4) COTE (~coat)
16 High pitch resulting from a health problem appearing after a quiet run (10) SHRILLNESS {SH}{R}{ILLNESS}
18 Celebration at sea after the run out is evident (10) NOTICEABLE CELEBrATION*
20 Son misplaced pipe with the part of a brake (4) SHOE (+s)SHO(-s)E
23 One exiled by the Oriental to invoke a positive feeling in a royal family member (7) EMPRESS (-i+e)EMPRESS
24 Force resulting in things getting done without realization? (5) HABIT [CD]
26 Letters from tourists enchanted by a type of green tea (6) SENCHA [T]
27 Violent windstorm making rust return to the round tops of the oil drums and nails (7) TORNADO {ROT}<={Oil}{Dr..s}{And}{Na..s}<=
28 Rude Gilbert shot for making an instrument possibly dangerous for epileptics (6,5) STROBE LIGHT*

DOWN
2   Rag in a windstorm (6) DUSTER [DD]
3   Heard famous Hungarian composer's record (4) LIST (~liszt)
4   Disguised sibyl taking in a student with a crumpled lily is a fool (5,5) SILLY BILLY {SIL{L}YB*}{LILY*}
5   Get wood varnish without a bill after Peggy loses margins on a thin kind of porcelain (8) EGGSHELL {pEGGy}{SHELLac}
6   Refusal to come up for participation in a revolution in a violent storm (7) CYCLONE {CYCL{NO<=}E}
7   Shade protecting a bishop with a single container in a violent storm (9) HURRICANE {HU{RR}{1}{CAN}E}
8   Man left out by a kettledrums player for a person operating a keyboard ... (6) TYPIST TYmPanIST
13 ... takes peach jam for a miserly person (10) CHEAPSKATE*
14 Statement in the article about a braid held up with a triumphant cry (9) ASSERTION {A{1 TRESS<=}{O}N}
17 Pam ignored macroscopic changes resulting in a sandstorm (8) SCIROCCO maCROSCOpIC*
19 Saint getting rid of the king in a bad mood in the violent windstorm (7) TEMPEST TEMPE(-r+st)ST
21 Focus on the price limit for a wheel accessory (6) HUBCAP {HUB}{CAP}
22 A poor mouse could live here (6) CHURCH [CD]
25 Small bag made with the help of some quiet Uighurs (4) ETUI [T]

GRID