Related Clues:

• More than one place in the country where river's dropped
• A detective force in charge is sharp
• A military bigwig carrying papers is bitter
• Bill I had put on in charge, that leaves a bitter taste
• Like animals or birds, but not necessarily fish
• 'Sheep' may be one
• Investigators tucked in to perfect cold tart
• Sharp-tasting, sour
• Vinegary-tasting
• Kings or queens, e.g
• Words such as 'sheep' and 'deer' (but not 'cat' and 'dog') can be this
• Sharp detectives in rising American intelligence organisation
• Word form denoting more than one is involved
• More than one friend securing draw, mostly
• Bad for tooth enamel