| SECRETIVE | Quartet in south-eastern island giving nothing away |
| SECRETE | Hide away in south eastern island |
| JERSEY | In war, Germans heartlessly capturing south-eastern island |
| SECRET | South-eastern island, mostly unknown (6) |
| MINDANAO | The Philippines' tallest peak, Mt Apo, is found on this south-eastern island |
| STOIC | Giving nothing away, in a way |
| STINGINESS | Smart head, one in hiding giving nothing away? |
| SPOILERFREE | Giving nothing away (In this answer, note the first 2: letters + the last 3) |
| POKERFACED | Fire-raiser confronted is giving nothing away (5-5) |
| POKERFACE | Countenance giving nothing away (5,4) |
| PORPOISE | Warm-blooded swimmer's inferior balance giving nothing away |
| SECRETSOCIETY | This social group intends giving nothing away (6,7) |
| TIGHTLIPPED | Mean number of Germans hoarding pennies, giving nothing away |
| MAIDENOVERS | Giving nothing away, spells "moo"! |
| DOCTRINAIRE | Opinionated medic giving nothing away during broadcast with European |
| INEXPRESSIVE | Riding train, the setter's giving nothing away |
| DEADPAN | Late to criticise, giving nothing away (7) |
| STEALTH | Secrecy at hostel, somehow giving nothing away |
| MEAN | The false name giving nothing away (4) |
| HOARDER | Frost appearing with communist revolutionary, one giving nothing away (7) |
